Momentum and Impulse Review

If the momentum of an object changes and its mass remains constant ,

• its velocity is changing

• there is a force acting on it

• it is accelerating

• all of the above

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The momentum change of an object is equal to the

• impulse acting on it

• objects mass times the force acting on it

• force acting on it

• force acting on it times its velocity

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NGSS.HS-PS2-2

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A car traveling along the road needs a force to stop, more force is required when the car has ______________

• less stopping distance

• more momentum

• more mass

• all of these

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Which of the following has the largest momentum

• a large truck parked a parking lot

• a pickup truck traveling down the highway

• the science building at your school

• a dog running down the street

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NGSS.HS-PS2-2

a ball player moves his hand backward to catch a ball this reduces the force on the hand by

• decreasing the time of impact

• by applying a force

• increasing the time of impact

• none of these

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the reason padded dashboards are used in cars is that they _________

• increase the time of impact

• decreases the time of impact

• applies a force

• increases the impulse

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What does the law of conservation of momentum state

• the total momentum is equal to impulse

• the change in the momentum is equal to impulse

• there is no law of conservation of momentum

• the total momentum in an isolated system is conserved

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NGSS.HS-PS2-2

A car runs into a resting identical car and they stick together how is Vf different from the Vi

• twice as large

• half as large

• on fourth as large

• stays the same

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NGSS.HS-PS2-2

A 5kg ball has a momentum of 30kgm/s what is the balls speed

• 150 m/s

• 0/167 m/s

• 6 m/s

• 30 m/s

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NGSS.HS-PS2-2

A cannon recoils from launching a cannonball why is the speed of the cannons recoil small

• there is not enough speed

• energy is absorbed

• the cannon has a smaller mass

• the mass of the cannon is larger

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NGSS.HS-PS2-2