Collisions Review

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = mv, where p is momentum, m is mass, and v is velocity.

Front

How do you calculate the momentum of an object?

Back

Momentum (p) is calculated using the formula p = mv, where m is the mass in kilograms and v is the velocity in meters per second.

Front

Which object has the greatest momentum: 10 kg at +8 m/s, 8 kg at -10 m/s, or 5 kg at +20 m/s?

Back

The object with the greatest momentum is the one with 5 kg at +20 m/s, as it has the highest product of mass and velocity.

Front

What happens to kinetic energy when the mass of an object is doubled?

Back

When the mass of an object is doubled, its kinetic energy also doubles, as kinetic energy (KE) is given by the formula KE = 1/2 mv².

Front

True or False: Speed or mass increases lead to kinetic energy increases before a collision.

Back

True. An increase in speed or mass results in an increase in kinetic energy.

Front

What is Newton's 3rd Law of Motion?

Back

Newton's 3rd Law states that for every action, there is an equal and opposite reaction.

Front

If a student pushes a ball with a force of 20 Newtons, what force does the student experience?

Back

The student experiences a negative (-) force of equal magnitude, which is -20 Newtons.

Front

True or False: All solid objects bend during a collision.

Back

True. All solid objects can deform or bend to some extent during a collision.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = 1/2 mv².

Front

What is the relationship between mass and kinetic energy?

Back

Kinetic energy is directly proportional to mass; if mass increases, kinetic energy increases, assuming velocity remains constant.