A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N.s.

• -2.5

• 18

• -18

• -45

Tags

NGSS.HS-PS2-2

A 0.250 kg cart moving at 0.400 m/s has what is the momentum of the cart?

• 0.1 kg.s/m

• 0.1 kg.m/s

• 10 kg.m/s

• 100 kg.m/s

Tags

NGSS.HS-PS2-2

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

• 6030 kg

• 0.0134 kg

• 74.44 kg

• 80 kg

Tags

NGSS.HS-PS2-1

The units for Impulse are

• N/s
• N.s
• N
• m/s

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

Tags

NGSS.HS-PS2-2

The impulse exerted on an object _________ the object’s change in momentum.

• Square

• Equal

• Double

• Displacement

Tags

NGSS.HS-PS2-2

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

A constant force of 4.5 N acts on a 7.2-kg object for 10.0 s. What is the change in the object's velocity?

• 6.25 m/s

• 3.2 m/s

• 1.2 m/s

• 4.33 m/s

Tags

NGSS.HS-PS2-1

If an airbag 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

• -2400 kg.m/s

• 0.67 kg.m/s

• -1500 kg.m/s

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 in scientific notation?

• 9.75×10² N

• 1.46×10⁴ N

• 9.75×10³ N

• 975 kg·m/s

Tags

NGSS.HS-PS2-1