Which scenario below is the same type of collision as two moving cars crashing into each other?

Baseball player hitting a fastball

Stepping on a pair of glasses on the floor

A baseball player swings his bat and makes contact with a baseball. Which experiences a greater force?

Neither. They experience the same force.

The bat applies a greater force on the ball.

The ball applies a greater force on the bat.

Based on what you know about collisions, which of the following statements below is most likely correct.

This is likely a real image - Although a golf ball feels hard it is capable of deforming.

This is likely a fake image - Hard objects like a golf ball are too hard to deform.

This could be real, but with a fake ball - Only soft objects are capable of deforming.

7. There are three types of collisions that tend to happen frequently in soccer: A) Headers, B) Collisions between players heads and C) when players hit the ground. How would the amount of force on the head compare to the amount of force on the object it collides with, in each system A, B, and C?

In EVERY collision, the peak force on the head would be the SAME as the peak force on the other object in the collision.

In SOME, BUT NOT ALL collisions, the peak force on the head would be the SAME as the peak force on the other object in a collision.

In EVERY collision, the peak force on the head would be DIFFERENT than the peak force on the other object in the collision.

When any two objects make contact, each object applies a force on the other surface they touch. The strength of those forces are...

the same but in opposite directions.

the same and in the same direction.

different but in the same direction.

different and in opposite directions.

A tire company is investigating how different tires impact a cars top speed. They use the same car for each trial they run, but replace the tires each time. For each new set of tires they put on, they run a new trial and record the car's top speed. Determine which variable is independent, dependent, and controlled.

Tires: IV Speed: DV Same Car: Control

Tires: DV Speed: IV Same Car: Control

Tires: Control Speed: IV Same Car: DV

Tires: DV Speed: Control Same Car: IV

The graphs below show the results from a test performed on steel that measured how much the material deformed when pushed with DIFFERENT forces. Based on these graphs what might we conclude about the THICKNESS of these objects?

The steel object depicted by graph A is THINNER than the steel object depicted by graph B and so it deformed MORE.

The steel object depicted by graph A is THICKER than the steel object depicted by graph B and so it deformed MORE.

The steel object depicted by graph A is THICKER than the steel object depicted by graph B and so it deformed LESS.

The steel object depicted by graph A is THINNER than the steel object depicted by graph B and so it deformed LESS.

Do all objects have the same breaking point?

No, different objects can withstand different amounts of force.

Yes, all objects break when the same amount of force is applied to them.

How much do you have to push on any object to get it to deform (temporarily or permanently)?

Temporary deformation begins when force is first applied.

You need to apply a lot of force before temporary deformation will begin.

Permanent damage happens when force is first applied.

There is no deformation when force is applied.

What did we see happen to the different materials as the force applied to them was increased?

The deformation INCREASED for all materials but each material had a DIFFERENT rate of deformation.

The deformation DECREASED for all materials at the SAME rate.

The deformation INCREASED for all materials at the SAME rate.

12. What happens when an object has reached it's elastic limit (its maximum amount of deformation)?

Nothing, it stops changing shape.

8.1 Test 1 Review

Authored by Brittney Irish

Science, Physics

8th Grade

NGSS covered

Used 115+ times

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30 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

the push or pull an object experiences due to making contact with another object.

contact forces

elastic limit

breaking point

deformation

a temporary or permanent change in shape, motion, or function of an object.

contact force

elastic limit

deformation

breaking point

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

the largest amount an object can be deformed and still return to its original shape after the force is removed.

contact force

elastic limit

deformation

breaking point

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

the amount an object deforms and cannot return to its original shape after the force is removed.

contact force

elastic limit

deformation

breaking point

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

the thing that changes in each test

independent variable

dependent variable

control variable

line of best fit

A line that helps us see that the data might be closer to a linear relationship than we suspected at first.

independent variable

dependent variable

control variable

line of best fit

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

these are variables to keep constant in each test

independent variable

dependent variable

control variable

line of best fit

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8.1 Test 1 Review

the push or pull an object experiences due to making contact with another object.

a temporary or permanent change in shape, motion, or function of an object.

the largest amount an object can be deformed and still return to its original shape after the force is removed.

the amount an object deforms and cannot return to its original shape after the force is removed.

the thing that changes in each test

A line that helps us see that the data might be closer to a linear relationship than we suspected at first.

these are variables to keep constant in each test

the effect of the change

Which scenario below is the same type of collision as two moving cars crashing into each other?

Cart A with 4 washers collided with Cart B with 2 washer. The peak force recorded for Cart A was 2N. What is the peak force recorded for Cart B?

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