CH 6 - Momentum

Question 1

Momentum

Answer 1

Momentum represents inertia in motion. p = m * v
At rest no object has any momentum!

Question 2

Impulse

Answer 2

The quantity force x time is called impulse.
Large forces acting a brief interval of time are called impulsive forces. Slow acting forces are called non-impulsive forces.

Question 3

Increasing Momentum

Answer 3

To increase the momentum the greatest force should be applied for as long as possible.

Question 4

Decreasing Momentum

Answer 4

To decrease the force of impact while the momentum is brought to zero the time should be increased.

Question 5

Impulse - Decreasing Momentum

Answer 5

For large change in momentum to be safe it is required to have a small force applied over a long period of time.

Question 6

Bouncing

Answer 6

The impulse is greater when an object bounces. The impulse required to stop an object then throw it back is greater than to just stop it.

Question 7

Bouncing is affected by

Answer 7

Bouncing is greatly affected by the body’s elasticity.