Lesson Impulse

Definition of impulse:

• The time integral of net force that causes Change in momentum

• The product of mass and velocity

• The ability to do work

• the rate of increase of speed or the rate of change of velocity

Tags

NGSS.HS-PS2-2

Impulse is represent by which symbol?

• I

• J

• P

• I and J

What is the unit of impulse?

• N/s

• Kg.m/s

• N.s

• Kg.m/s and N.s

• None of the above

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

NGSS.HS-PS2-3

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-PS2-1

The impulse is _____the change in momentum

• Greater than

• Equal to

• Less than

• Always double

Tags

NGSS.HS-PS2-2

A car crashes into a wall with an impulse of 40,000 kg.m/s. The collision took 2 seconds . How much force did the wall exert?

• 60,000 N

• 40,000 N

• 20,000 N

• 80,000 N

Tags

NGSS.HS-PS2-1

If you push an object with a force of 10 N for 5 seconds , you will change it’s momentum by:

• 2 N s

• 50 n s

• 2 N/s

• 50 N/s

Tags

NGSS.HS-PS2-1

Which of the following does the impulse-momentum equation implies? Check all that apply

• The equation evaluates the change in momentum

• It states that the change in momentum = impulse

• In order to get the largest possible change in momentum, we use the equation to find the smallest impulse possible.

• All of the above

Tags

NGSS.HS-PS2-2