IST Year 10 Impulse and Momentum

A 5.0 N force is applied to a 3.0 kg ball to change its velocity from 9.0 m/s rightward to 3.0 m/s rightward. The impulse applied to the ball is ______ N s.

rightward directions are considered positive.

• -2.5

• -10

• -18

• -45

Tags

NGSS.HS-PS2-1

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

The difference between a car hitting a wall vs. a car hitting a hay stack is

• the Impulse on the car hitting the wall is greater
• the change in momentum of the car hitting the wall is greater
• the force on the car hitting the hay stack is greater
• the collision time of the car hitting the hay stack is greater

Tags

NGSS.HS-PS2-2

A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9.0 m/s. What is his mass?

• 6030 kg

• 0.0134 kg

• 74.4 kg

• 80 kg

Tags

NGSS.HS-PS2-2

Cart A is pulled with a 2.0-N force for 2.0 seconds, and Cart B is pulled with a 1.0-Newton force for 3.0 seconds. Which cart experiences the greatest impulse?

• Cart B

• Cart A

• they are the same

Tags

NGSS.HS-PS2-1

A boy kicks a football with a force of 20 N, the time the force acts for is 0.30 s.

Calculate the impulse on the ball.

• 1.0 N.s

• 6.0 N.s

• 66 N.s

• None of these

Tags

NGSS.HS-PS2-1

In a closed system, the net ____ on that system is zero.

• external force

• internal force

• time interval

• 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? 

• 6.3 m/s
• 3.2 m/s
• 1.2 m/s 
• 4.33 m/s

Tags

NGSS.HS-PS2-1

The velocity of a 975-kg car is changed from 12.0 m/s forward to 27.0 m/s forward in 15 s 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