Impulse, Momentum, and Systems

Which of the following is NOT a unit of momentum?

• kg*m/s

• N*s

• kg*mph

• kg*m/s²

Tags

NGSS.HS-PS2-2

If a net force is acting on an object, 

• its velocity must be constant
• its velocity must be changing
• its mass must be changing
• its acceleration = 0 

Tags

NGSS.HS-PS2-1

Most modern vehicles have padded dashboards. This reduces collision injuries by...

• reducing the driver's change in momentum
• increasing the driver's change in momentum
• increasing the force of impact
• increasing the time of impact

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

NGSS.HS-ETS1-3

A person on a stationary skateboard throws a bowling ball with a velocity of +5.0 m/s. What is a possible velocity of the person after the throw? 

• 0 m/s
• -1.5 m/s

• -5.0  m/s

• -7.5 m/s

• +1.5 m/s

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-1

A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 

• 55 kg*m/s
• 100 kg*m/s
• 250 kg*m/s
• 500 kg*m/s

Tags

NGSS.HS-PS2-2

Two blocks begin at rest with an initial momentum of zero. After the spring is sprung, the two blocks move in opposite directions. What is the total final momentum? 

• zero
• a positive value in the direction of the heavier block
• a positive value in the direction of the faster block
• more information is needed

Tags

NGSS.HS-PS2-2

Parkour Peter bends his knees upon landing in order to ____

• reduce his change in momentum
• increase his change in momentum
• increasing his landing time
• increasing his landing force

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

Momentum is a ____________________ quantity

• science

• scalar

• vector

• energy

Tags

NGSS.HS-PS2-2

In an isolated system, the net ____ on that system is zero.

• external force

• internal force

• time interval

• displacement

Tags

NGSS.HS-PS2-2

What is a system called when there is no external force on it?

• integral

• unified

• isolated

• closed

Tags

NGSS.HS-PS2-2