LT 5.7 - Impulse-Momentum Theorem

Softer landings tend to

• increase impact force
• increase force
• increase collision time
• increase change in momentum

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NGSS.HS-PS2-3

Cart A is pulled with a 2 Newton force for 2 seconds, and Cart B is pulled with a 1 Newton force for 3 seconds.  Which cart experiences the greatest impulse?

• Cart B
• Cart A
• they are the same

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NGSS.HS-PS2-1

The impulse-momentum theorem states that

• the impulse on an object is equal to the change in momentum it causes 
• the force on a moving object is equal to the magnitude of the impulse.
• the impulse on an object is greater than the change in momentum it causes 
• the impulse on an object is less than the change in momentum it causes

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NGSS.HS-PS2-2

Which takes more force  to catch, a bowling ball or a ping pong ball?

• bowling ball because it has more momentum
• ping pong ball because it has more momentum
• both require the same amount of force when catching
• bowling ball because it has less momentum

Tags

NGSS.HS-PS2-1

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

• 33.3 N⋅s

How can a tennis ball and a bowling ball have the same momentum?

• have the same speed
• have different speeds
• one is moving backwards
• they can't

Tags

NGSS.HS-PS2-2

The units for Impulse are

• N/s

• N·s

• N

• m/s

Which variable is impulse?

• J

• F

• m

• v

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NGSS.HS-PS2-1

NGSS.HS-PS2-2

NGSS.HS-PS2-3

m $\Delta$  v is equal to...

• the impulse

• the force times the time

• The change in momentum

• the velocity

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NGSS.HS-PS2-2

NGSS.HS-PS2-3

To calculate impulse

• divide mass and velocity

• multiply the force and the change in time

• multiply momentum and mass

• divide mass and acceleration

Tags

NGSS.HS-PS2-2