Law of Conservation of Linear Momentum and Impulse

A 5.0 kg mass has a velocity change from 8.0 m/s east to 2.0 m/s east. Find the object's change in momentum.

• -30 kg m/s west

• 10 kg m/s west

• -40 kg m/s west

• -16 kg m/s west

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NGSS.HS-PS2-2

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

• 45

• 10

• -18

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NGSS.HS-PS2-1

NGSS.HS-PS2-2

In hitting a stationary hockey puck having a mass of 0.180 kg, a hockey player gives the puck an impulse of 60 N-s. At what speed will the puck move toward the goal?

• 10.8 m/s

• 333.3 m/s

• 60.18 m/s

• 34.01 m/s

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NGSS.HS-PS2-1

NGSS.HS-PS2-2

While playing pool, the white cue ball strikes the 8 ball. Before the collision, the cue ball's velocity was 10 m/s and the 8 ball was at rest. If both ball's have a mass of 0.15 kg and the cue ball's velocity after the collision is 2 m/s, what is the 8 ball's velocity?

• 2 m/s

• 8 m/s

• -2 m/s

• 1.5 m/s

Tags

NGSS.HS-PS2-2

In a physics experiment, two carts of mass 1.5 kg each are rolled towards each other.  The orange cart has a velocity of 2 m/s and the blue cart has a velocity of -1m/s.  The carts stick together when they collide.  Calculate their final speed.

• 0.5 m/s

• 1.0 m/s

• 0.33 m/s

• 0.67 m/s

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NGSS.HS-PS2-2

Jorge noticed a collision outside the coffee shop where two cars collided and stuck together.  What type of collision did he observe?

• Elastic

• Inelastic

• Completely inelastic

• none

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NGSS.HS-PS2-2

The impulse-momentum theorem states that

• Athe impulse on an object is less than the change in momentum it causes

• the impulse on an object is greater than the change in momentum it causes 

• 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.

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NGSS.HS-PS2-2

Principle of conservation of linear momentum

• The total momentum of an isolated system remains constant if no external forces act on it

• The total momentum of an isolated system changes if no external forces act on it

• The total momentum of an isolated system remains constant only if external forces act on it

• The total momentum of an isolated system changes even if external forces act on it

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NGSS.HS-PS2-2

Momentum

• Product of mass and velocity

• Product of mass and acceleration

• Product of force and time

• Product of force and distance

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NGSS.HS-PS2-2

A 2 kg object moving at 3 m/s collides with a 1 kg object at rest. If the two objects stick together after the collision, what is their final velocity?

• 1 m/s

• 2 m/s

• 3 m/s

• 4 m/s

Tags

NGSS.HS-PS2-2