Impulse and Momentum Quiz

When a force is applied over a longer period of time, the impulse it delivers to an object:

• Increases

• Decreases

• Stays the same

• Depends on the mass of the object

Tags

NGSS.HS-PS2-1

A "hard impulse" applies a larger force over a short period of time, while a "soft impulse" applies a smaller force over a longer period of time.

• True

• False

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NGSS.HS-PS2-3

Impulse is defined as the product of ______________.

What is the primary reason airbags in cars reduce injury during collisions?

• They decrease the mass of the driver.

• They increase the time over which the force is applied.

• They decrease the total impulse experienced by the driver.

• They eliminate the force of the collision.

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NGSS.HS-PS2-3

For two objects experiencing the same change in momentum, the object with a larger force experiences a longer contact time.

• True

• False

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NGSS.HS-PS2-3

Explain why a baseball player often "follows through" with their swing after hitting the ball.

Tags

NGSS.HS-PS2-1

In a car crash, why would a crumple zone be considered a "soft impulse"?

• It reduces the mass of the car.

• It reduces the total force by shortening the time of impact.

• It reduces the total force by increasing the time of impact.

• It completely eliminates the impact force.

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NGSS.HS-PS2-3

A 5 kg object is at rest and is struck by a force of 50 N for 0.2 seconds. What is the object's final velocity?

Tags

NGSS.HS-PS2-1

The total impulse is the same whether a collision is "hard" or "soft," as long as the change in momentum is the same.

• True

• False

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NGSS.HS-PS2-2

Describe a real-world example of a "soft impulse" and explain why it is safer compared to a "hard impulse."

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NGSS.HS-PS2-3

NGSS.HS-PS2-2