Impulse

A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?

• 6030 kg
• 0.0134 kg
• 74.4 kg
• 80 kg

Tags

NGSS.HS-PS2-2

The units for Impulse are

• N/s
• N.s
• N
• m/s

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

Tags

NGSS.HS-PS2-2

The velocity of a 975-kg car is changed from 12.0 m/s to 27.0 m/s in 15s by an external, constant force. What is the magnitude of the force? 

• 9.75×10² N
• 1.46×10⁴ N
• 9.75×10³ N
• 975 kg·m/s

Tags

NGSS.HS-PS2-1

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

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-PS2-2

A 0.250 kg cart moving at 0.400 m/s has how much momentum?

• 0.1 kg-m/s
• 1 kg-m/s
• 10 kg-m/s
• 100 kg-m/s

Tags

NGSS.HS-PS2-2

When the speed of an object is doubled, its momentum

• remains unchanged in accord with the conservation of momentum.
• doubles
• quadruples
• decreases

Tags

NGSS.HS-PS2-2

An object that has momentum can be described as _________

• a) changing its velocity

• b) moving fast

• c) resisting changes in its state of motion

• d) having its mass in motion

• e) encountering a net force

Tags

NGSS.HS-PS2-2