Impulse

Clearly it is safer to jump from a ladder onto a mound of hay rather than onto bare concrete. Which explanation is best as to why this is so.

• The impulse occurs over a longer time period but with a lower force.

• Less momentum is lost when jumping onto hay.

• There is less impulse when jumping onto hay.

• There is a greater change of momentum when jumping onto concrete.

Tags

NGSS.HS-PS2-3

An egg gets dropped from a height of 0.1 meters and cracks. A second egg gets dropped from the same height but this time it lands on a glass of water and does not break. In terms of impulse.

• 1st egg experienced more impulse

• 2nd egg experienced more impulse

• both experienced the same impulse

Tags

NGSS.HS-PS2-2

What is the unit of impulse?

• N/s

• Kg.m/s

• N.s

• Kg.m/s and N.s

• None of the above

Tags

NGSS.HS-PS2-2

All of the following are examples of impulse except..

• A car moving with constant speed

• A tennis ball hitting a racket

• A pencil getting stuck to the ceiling

• A hammer bouncing of a nail

Tags

NGSS.HS-PS2-2

Most modern vehicles have padded dashboards. This reduces collision injuries by...

• reducing the driver's change in momentum

• increasing the driver's change in momentum

• increasing the force of impact

• increasing the time of impact

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

An impulse depends on

• weight and force

• force and time

• electric charge and time

• none of these

Tags

NGSS.HS-PS2-3

An egg gets dropped from a height of 0.1 meters and cracks. A second egg gets dropped from the same height but this time it lands on a glass of water and does not break. In terms of force and time, the second egg must have experienced...

• more force, but less time

• less force, but more time

• more force, and more time

• less force, and less time

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The impulse is _____the change in momentum

• Greater than

• Equal to

• Less than

• Always double

Tags

NGSS.HS-PS2-2

A baseball bat applies a force of 500 N to a ball for 0.1s. What was the impulse on the ball?

• 5 N . s

• 500 N .s

• 500 N/s

• 50 N.s

Tags

NGSS.HS-PS2-3

A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s.
Calculate the impulse on the ball.

• 1 N.s

• 6 N.s

• 66 N.s 

• None of these