The Body in Motion Revision

What does the coefficient of restitution measure?

• The result of the impact of two objects

• The mass of two objects

• The temperature of two objects

• The total force of two objects

Which of the following is a method to calculate the coefficient of restitution?

• The difference between height of bounced and height of dropped

• The sum of the masses of two objects

• The product of the velocities of two objects

• The difference between the height bounced and velocity of approach of two objects

Which physical event does the diagram most likely represent in the context of the coefficient of restitution?

• The rebound of a ball after hitting the ground

• The velocity of a ball

• The ball being dropped

• The balls elasticity

What happens to the velocity of separation compared to the velocity of approach when momentum is transferred to the ground?

• Velocity of separation will be greater than that of approach

• Velocity of separation will be equal to that of approach

• Velocity of separation will be less than that of approach

• Velocity of separation will not change

Which of the following statements best describes the coefficient of restitution in the context of a ball hitting the ground?

• It is always equal to 1.0

• It is always greater than 1.0

• It is always less than 1.0

• It is always zero

Which of the following is NOT a factor affecting the coefficient of restitution?

• Elasticity of the two objects

• Temperatures

• Color of the objects

• Frictional forces between the two objects

What does the coefficient of restitution mainly depend on when considering a ball?

• The elasticity of the ball

• The color of the ball

• The size of the ball

• The weight of the ball

What happens when a ball is more compressed during impact?

• It loses all its energy

• It transfers less energy to the contact surface

• It transfers more energy or momentum to the contact surface

• It changes its color

A tennis player hits a ball with a racket, causing the ball to compress and then return to its original shape. Which property of the ball is being demonstrated?

• Density

• Elasticity

• Hardness

• Flexibility

According to the text, what is the relationship between the speed of impact and the compression of the ball?

• The slower the hit, the greater the compression

• The harder the hit, the greater the compression

• The speed of impact does not affect compression

• The greater the compression, the slower the hit