CH 6 Test

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

What is the principle of conservation of momentum?

Back

The principle of conservation of momentum states that in a closed system, the total momentum before an event (like a collision) is equal to the total momentum after the event.

Front

What is an elastic collision?

Back

An elastic collision is a type of collision where both momentum and kinetic energy are conserved.

Front

What is an inelastic collision?

Back

An inelastic collision is a type of collision where momentum is conserved, but kinetic energy is not.

Front

How do you calculate the final velocity of two objects after an inelastic collision?

Back

Use the formula: (m1*v1 + m2*v2) / (m1 + m2) = v_final, where m1 and m2 are the masses and v1 and v2 are the initial velocities.

Front

What factors affect the stopping distance of an object?

Back

The stopping distance is affected by the object's speed, mass, and the friction between the object and the surface.

Front

What is the relationship between mass and momentum?

Back

Momentum is directly proportional to mass; as mass increases, momentum increases if velocity remains constant.

Front

What is the effect of separating objects in a container on impact forces?

Back

Separating objects with cushioning materials (like bubble wrap) can reduce impact forces by increasing the time over which the force is applied.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated using the formula KE = 1/2 mv^2, where m is mass and v is velocity.

Front

How does mass affect kinetic energy?

Back

Kinetic energy increases with mass; doubling the mass of an object while keeping velocity constant will double its kinetic energy.