Impulse

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

The units for Impulse are

• N/s
• N.s
• N
• m/s

A mother pushes her 120-Newton child in a swing. If the mother exerts a 10-Newton force on the child for half a second, what is the magnitude of the impulse imparted to the child by the mother? What formula do you use:

• p=mv

• mvf-mvi=Ft

• Imp=Ft

• F=(mvf-mvi)/t

A(n) _________________ causes and is equal to a change in momentum

• impulse
• force
• joule
• watt

Tags

NGSS.HS-PS2-2

If an air bag changes a 60 kg person's speed from 40.0 m/s to     0.0 m/s, what impulse must act on the person? 

•  2400 kg.m/s
• 1.5 kg.m/s
• 0.67 kg.m/s
• 1500 kg.m/s

Tags

NGSS.HS-PS2-2

What impulse would be needed to stop a 1500 kg car traveling at 20 m/s?

• 7500 Ns.
• 15,000 Ns.
• 30,000 Ns.

Tags

NGSS.HS-PS2-1

A bullet traveling at 500 m/s is brought to rest by an impulse of 50 N*s.  What is the mass of the bullet?

• 10 kg
• 0.1 kg
• 0.01 kg
• 2500 kg

Tags

NGSS.HS-PS2-1

Which two quantities can be expressed using the same units?

• momentum and energy
• energy and force
• impulse and force
• impulse and momentum

According to the graph, what is the impulse from 0-3 seconds?

• 750 N

• 750 N*s

• 1125 N

• 1125 N*s

Tags

NGSS.HS-PS2-2

According to the graph, what is the impulse from 0-4 seconds?

• 40 N

• 40 N*s

• 62.5 N

• 62.5 N*s