Momentum and Collisions: Interactive Learning Quizzes for Biology Majors

Question 1

Calculate the total momentum of two cars with masses 1,000 kg and 1,500 kg moving at 20 m/s and 30 m/s, respectively.

Accepted Answer

55,000 kg m/s

Answer

50,000 kg m/s

Answer

6,000 kg m/s

Answer

8,000 kg m/s

Question 2

Which of the following is NOT a crucial factor influencing the outcome of a collision?

Accepted Answer

Temperature of the environment

Answer

Masses of the objects

Answer

Velocities of the objects

Answer

Coefficient of restitution

Question 3

A ball is dropped from a height of 10 m. Just before hitting the ground, what is its momentum?

Accepted Answer

20 kg m/s

Answer

0 kg m/s

Answer

10 kg m/s

Answer

30 kg m/s

Question 4

Identify the SI unit for angular momentum.

Accepted Answer

Kilogram-meters squared per second

Answer

Joules

Answer

Newton-meters

Answer

Radians per second

Question 5

Calculate the angular momentum of a flywheel with a moment of inertia of 20 kg m^2 rotating at 100 rad/s.

Accepted Answer

2,000 kg m^2/s

Answer

200 kg m^2/s

Answer

20,000 kg m^2/s

Answer

200,000 kg m^2/s

Question 6

According to the conservation of momentum, the total momentum of a closed system remains constant if:

Accepted Answer

There are no external forces acting on the system.

Answer

There are external forces acting on the system, but their net force is zero.

Answer

The objects in the system are moving at constant velocities.

Answer

The objects in the system are moving at constant accelerations.

Question 7

A 10 kg ball moving at 5 m/s collides with a 5 kg ball at rest. After the collision, the 10 kg ball has a velocity of 3 m/s. What is the velocity of the 5 kg ball after the collision?

Accepted Answer

4 m/s

Answer

2 m/s

Answer

6 m/s

Answer

8 m/s

Question 8

Which of the following is NOT a factor that affects the outcome of a collision?

Accepted Answer

Shape of the colliding objects

Answer

Masses of the colliding objects

Answer

Velocities of the colliding objects

Answer

Coefficient of restitution

Question 9

Which of the following is a unit of angular momentum?

Accepted Answer

Kilogram-meter per second (kg-m/s)

Answer

Newton-meter (N-m)

Answer

Radian per second (rad/s)

Answer

Joule-second (J-s)

Question 10

The moment of inertia of a solid cylinder is given by which of the following expressions?

Accepted Answer

I = Mr²/2

Answer

I = Mr²

Answer

I = 2Mr²

Answer

I = 4Mr²

Question 11

In an elastic collision, which of the following physical quantities remain constant?

Accepted Answer

Momentum and kinetic energy

Answer

Momentum only

Answer

Kinetic energy only

Answer

Velocity only

Question 12

Which among the following is the SI unit of momentum?

Accepted Answer

Kilogram meter per second

Answer

Newton

Answer

Joule

Answer

Watt

Question 13

A rocket engine burns fuel at a rate of 100 kg/s and exhausts gases at a velocity of 2500 m/s. Calculate the thrust produced by the rocket engine.

Accepted Answer

250 kN

Answer

100 kN

Answer

50 kN

Answer

25 kN

Question 14

A gyroscope maintains a stable orientation in space primarily due to:

Accepted Answer

Law of conservation of angular momentum

Answer

Law of conservation of linear momentum

Answer

Law of conservation of energy

Answer

Newton's laws of motion

Question 15

Which type of collision occurs when objects stick together after impact?

Accepted Answer

Perfectly inelastic collision

Answer

Elastic collision

Answer

Inelastic collision

Answer

Superelastic collision

Question 16

Which of the following is a unit of angular momentum?

Accepted Answer

Kilogram-meter squared per second

Answer

Joule-second

Answer

Newton-meter

Answer

Watt

Question 17

Which of the following is NOT a factor that affects the outcome of a collision?

Accepted Answer

Temperature of the objects

Answer

Mass of the objects

Answer

Velocity of the objects

Answer

Elasticity of the objects

Question 18

Which of the following is an example of an inelastic collision?

Accepted Answer

A car crashing into a tree

Answer

A ball bouncing off a wall

Answer

A pendulum swinging

Answer

A rocket launching into space

Question 19

Which of the following is NOT a recognized type of collision?

Accepted Answer

Superelastic

Answer

Elastic

Answer

Inelastic

Answer

Perfectly inelastic

Question 20

Explain the relationship between momentum and velocity, providing the relevant equation.

Accepted Answer

Momentum is directly proportional to velocity (p = mv).

Answer

Momentum is inversely proportional to velocity.

Answer

Momentum is not related to velocity.

Answer

Momentum is independent of velocity.

Question 21

The correct formula for linear momentum is:

Accepted Answer

Mass multiplied by velocity

Answer

Force multiplied by time

Answer

Momentum multiplied by time

Answer

Velocity multiplied by force

Question 22

The unit of impulse is:

Accepted Answer

Newton-second

Answer

Newton-meter

Answer

Kilogram-meter per second

Answer

Joule

Question 23

Which of the following is NOT a vector quantity?

Accepted Answer

Speed

Answer

Velocity

Answer

Acceleration

Answer

Displacement

Question 24

Define linear momentum.

Accepted Answer

Mass of an object multiplied by its velocity

Answer

Velocity of an object multiplied by its mass

Answer

Force applied to an object

Answer

Change in velocity per unit time

Question 25

In a perfectly elastic collision, which of the following is conserved?

Accepted Answer

Both linear and angular momentum

Answer

Only linear momentum

Answer

Only angular momentum

Answer

Neither linear nor angular momentum

Question 26

A ball of mass 'm' moving with velocity 'v' collides head-on with an identical stationary ball. After the collision, the first ball has a velocity of 'v/2'. What is the velocity of the second ball?

Accepted Answer

v/2

Answer

v/4

Answer

v

Answer

2v

Question 27

Which type of collision involves the conversion of kinetic energy into other forms of energy?

Accepted Answer

Inelastic collision

Answer

Elastic collision

Answer

Perfectly inelastic collision

Answer

Super elastic collision

Question 28

Define angular momentum.

Accepted Answer

Product of an object's moment of inertia and angular velocity

Answer

Ratio of an object's kinetic energy to its angular velocity

Answer

Product of an object's mass and its angular velocity

Answer

Sum of the angular momenta of all particles in an object

Question 29

According to Newton's Third Law of Motion, the momentum of a rocket and its exhaust gases:

Accepted Answer

Are equal and opposite

Answer

Are equal and in the same direction

Answer

Are unequal and opposite

Answer

Are unequal and in the same direction

Question 30

Define the concept of momentum.

Accepted Answer

The product of an object's mass and its velocity.

Answer

The quantity that describes an object's resistance to changes in its motion.

Answer

The rate at which an object's energy changes.

Answer

The amount of work done on an object.

Question 31

During a collision, which of the following quantities remains constant?

Accepted Answer

Momentum

Answer

Kinetic energy

Answer

Velocity

Answer

Acceleration

Question 32

Which type of collision results in the greatest loss of kinetic energy?

Accepted Answer

Perfectly inelastic collision

Answer

Elastic collision

Answer

Inelastic collision

Answer

Superelastic collision

Question 33

Identify the vector quantity that describes the rotational motion of an object.

Accepted Answer

Angular momentum

Answer

Displacement

Answer

Velocity

Answer

Acceleration

Question 34

Which factor does NOT influence the angular momentum of an object?

Accepted Answer

Shape

Answer

Mass

Answer

Velocity

Answer

Radius

Question 35

A ball with a mass of 1 kg is moving at a velocity of 10 m/s to the east. What is its linear momentum?

Accepted Answer

10 kg m/s to the east

Answer

1 kg m/s to the west

Answer

100 kg m/s to the east

Question 36

Which of the following statements about momentum is accurate?

Accepted Answer

Momentum is a vector quantity, meaning it has both magnitude and direction.

Answer

Momentum is conserved only in elastic collisions, meaning collisions where no kinetic energy is lost.

Answer

Momentum is a scalar quantity, meaning it has only magnitude.

Answer

Momentum is directly proportional to the object's speed.

Question 37

In an elastic collision between two objects, which of the following quantities is conserved?

Accepted Answer

Both kinetic energy and momentum

Answer

Neither kinetic energy nor momentum

Answer

Kinetic energy only

Answer

Momentum only

Question 38

Which of the following is an example of a completely inelastic collision?

Accepted Answer

A ball of clay hitting a wall and sticking to it

Answer

A car colliding with another car

Answer

A pendulum swinging

Answer

A ball bouncing off a wall

Question 39

In a collision scenario, which of the following quantities remains constant?

Accepted Answer

Total momentum

Answer

Kinetic energy

Answer

Velocity

Answer

Potential energy

Question 40

Consider two cars: Car A with a mass of 1000 kg moving at 10 m/s, and Car B with a mass of 500 kg initially stationary. After a head-on collision, what is their combined velocity?

Accepted Answer

6.67 m/s

Answer

5 m/s

Answer

10 m/s

Answer

15 m/s

Question 41

Which type of collision results in the greatest loss of kinetic energy?

Accepted Answer

Inelastic collision

Answer

Elastic collision

Answer

Perfectly elastic collision

Question 42

Which factor does NOT influence the outcome of a collision?

Accepted Answer

Temperature

Answer

Velocity

Answer

Coefficient of restitution

Answer

Mass

Question 43

Which real-world application demonstrates the conservation of momentum?

Accepted Answer

Airbags in cars

Answer

Photosynthesis

Answer

Nuclear reactions

Answer

Protein synthesis

Question 44

Which statement accurately describes angular momentum?

Accepted Answer

Angular momentum is conserved in the absence of external torque.

Answer

Angular momentum is independent of the mass of the object.

Answer

Angular momentum is a scalar quantity.

Question 45

A ball with mass m is moving with speed v. If its speed is doubled, what will be the change in its kinetic energy?

Accepted Answer

4 times the original kinetic energy

Answer

Half of the original kinetic energy

Answer

Same as the original kinetic energy

Answer

Twice the original kinetic energy

Question 46

Two objects with equal masses collide head-on with equal speeds. If the collision is elastic, which of the following will occur after the collision?

Accepted Answer

Both objects rebound with their original speeds and in opposite directions.

Answer

Both objects stick together and move with half of their original speed.

Answer

Both objects rebound with half of their original speeds and in opposite directions.

Question 47

A bullet is fired horizontally into a stationary block of wood. The bullet lodges itself inside the block, and the combined object then moves together. Which of the following statements is true about the momentum of the bullet-block system before and after the collision?

Accepted Answer

Momentum is conserved.

Answer

Momentum of the combined system is greater than the momentum of the bullet.

Answer

Momentum is not conserved, since energy is lost as heat.

Answer

Momentum of the bullet is greater than the momentum of the combined system.

Question 48

An object of mass m1 is moving with velocity v1, and another object of mass m2 is moving with velocity v2 in the opposite direction. If the two objects collide and stick together, what will be the velocity of the combined object?

Accepted Answer

(m1*v1 - m2*v2) / (m1 + m2)

Answer

(m1*v1 + m2*v2) / (m1 - m2)

Answer

(m1*v1 + m2*v2) / (m1 + m2)

Answer

(m2*v1 - m1*v2) / (m1 + m2)

Question 49

The angular momentum of a rigid body is proportional to its:

Accepted Answer

Moment of inertia and angular velocity

Answer

Moment of inertia and linear velocity

Answer

Mass and angular velocity

Answer

Mass and linear velocity

Question 50

A flywheel rotating at a constant angular velocity has:

Accepted Answer

Zero angular acceleration

Answer

Angular acceleration proportional to the angular velocity

Answer

Positive angular acceleration

Answer

Negative angular acceleration

Question 51

The moment of inertia of a point mass m about an axis a distance r from the mass is:

Accepted Answer

mr^2

Answer

m/r

Answer

mr

Answer

m/r^2

Question 52

A torque is applied to a rotating object, causing it to change its angular velocity. Which of the following will also change as a result of the applied torque?

Accepted Answer

Angular momentum

Answer

Linear momentum

Answer

Moment of inertia

Answer

Linear velocity

Question 53

The collision between two billiard balls is an example of:

Accepted Answer

Elastic collision

Answer

Perfectly inelastic collision

Answer

Inelastic collision

Answer

Superelastic collision

Question 54

An object with a momentum of p strikes a stationary object with a mass twice its own. If the collision is elastic, what will be the percentage of the original momentum transferred to the stationary object?

Accepted Answer

66.67%

Answer

50%

Answer

33.33%