Exit Check 4.5 - Impulse

4.5.1

Which of the following is the name of the quantity that is the change in a mass's motion?

• Energy

• Momentum

• Impulse

• Friction

Answer explanation

This question links to success criteria 4.5.1: I can use the relationship between impulse, force and collision time to determine how a change in one quantity affects the others.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-2

4.5.1

If the amount of impulse is kept the same, but the time of the collision is tripled, what happens to the force of impact?

• The force is multiplied by 3

• The force stays the same

Answer explanation

This question links to success criteria 4.5.1: I can use the relationship between impulse, force and collision time to determine how a change in one quantity affects the others.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-1

4.5.2

When an egg is thrown at the same velocity at a sheet instead of a wall, it can be slowed down to a stop without breaking. Why is this? Select all answers that are true.

• The force that the egg is experiencing when hitting the sheet is smaller

• The impulse that the egg is experiencing when hitting the sheet is smaller

• The collision with the sheet lasts for a longer time.

• The egg started with less momentum.

Answer explanation

This question links to success criteria 4.5.2: I can use impulse to determine ways to make collisions safer or more effective.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-3

NGSS.HS-PS2-1

• Use the minimum amount of stuff to keep mass small.

• Use the maximum amount of stuff to increase the mass and make it hard for the force to find the egg.

• Find ways to squish, bend, or crumple to extend the time of collision.

• Drop it from up higher so it has more momentum when it hits the ground.

• Try to increase air resistance to slow down the egg so it has less velocity.

Answer explanation

This question links to success criteria 4.5.2: I can use impulse to determine ways to make collisions safer or more effective.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-3

NGSS.HS-ETS1-2

4.5.1

If the force of an impact stays the same but the Impulse of the collision was doubled, what must have happened to the length of the collision?

• The collision time was multiplied by 2

• The collision time was multiplied by 4

• The collision time didn't change

Answer explanation

This question links to success criteria 4.5.1: I can use the relationship between impulse, force and collision time to determine how a change in one quantity affects the others.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-3

4.5.1

Two soccer players kick balls of equal size, weight, and mass. Both kicks have an equal collision time. If the second kick had four times the force, how was the Impulse of the second kick different from the first?

Answer explanation

This question links to success criteria 4.5.1: I can use the relationship between impulse, force and collision time to determine how a change in one quantity affects the others.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-1

4.5.2

A bug and a car's windshield experience a collision. The bug is squished instantly but the windshield is not damaged. How do the impulses of the bug and car compare? Remember what Newton's 3rd Law tells us about the action and reaction forces.

• The bug experienced a larger impulse.

• The car's windshield experienced a larger impulse.

• Neither experienced an impulse.

• Both experienced the same impulse.

Answer explanation

This question links to success criteria 4.5.2: I can use impulse to determine ways to make collisions safer or more effective.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-1

4.5.2

A friend is learning to play golf and is trying to figure out how to hit the ball as far as possible. They have already done everything they can to get the most force possible, what can they still try to make the ball go further?

• They should make sure to keep swinging after they hit the ball to keep the collision time high.

• They should make sure to stop swinging right after they hit the ball to keep the collision time low.

• They should try hitting the ball straight down

• They should try hitting the ball with another ball.

Answer explanation

This question links to success criteria 4.5.2: I can use impulse to determine ways to make collisions safer or more effective.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

4.5.2

Which of the following describes why having padding in a helmet protects a football player from head injuries?

• The padding gets pressed smaller in an impact causing the collision to take more time. This reduces the force experienced at any moment in time.

• The helmet is hard and creates an equal and opposite force that cancels out the impact forces.

• The padding is soft and comfortable.

• The helmet adds mass which gives the football player more momentum and means that they hit the other players harder.

Answer explanation

This question links to success criteria 4.5.2: I can use impulse to determine ways to make collisions safer or more effective.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-3

4.5.2

NASA's Spirit lander used air filled bags to help it slow down from extremely high speeds. Why were these bags better than using hard and stiff legs to land on?

• The airbags will have more mass than the legs

• The airbags extended the time of collision more than the legs could have

• The airbags reduced the time of collision more than the legs could have

• The legs would have been able to bounce even higher.

Answer explanation

This question links to success criteria 4.5.2: I can use impulse to determine ways to make collisions safer or more effective.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-3

NGSS.HS-ETS1-3