Barb and Trey are pushing a box toward one another with equal force. What would happen if Trey stopped pushing?

The box would move towards Trey.

The box would move towards Barb

The box would move upwards towards the sky.

What is air resistance?

friction in the air that slows things down

when an airplane flies into a cloud

when you feel the air hitting your face

Which statement best explains why a car that is rolling on a level surface will eventually come to a stop?

Frictional forces oppose the motion of the car.

Forward motion slowly runs out as energy is expended.

The natural state of an object is to be at rest.

Inertia acting on an object will dissipate.

Which of these is an example of Newton’s first law of motion?

A person standing on a bus moves backward when the bus suddenly moves forward.

A baseball hit with a baseball bat travels faster than a bowling ball hit with the same force.

A basketball bounces on the ground with the same force that the ground pushes up on the ball.

A person jumps to a dock from a boat, and the boat moves away from the dock.

In a game of Tug of War, the girls use 600 N of force to the left and the boys use 200 N of force to the right. Which describes the game?

the net force is 400 N to the left

forces are balanced and there is no motion

the net force is 800 N and the boys win

the net force is 400 N to the right

An object in motion that is is acted upon by an UNBALANCED force will...

change the motion of the object in some way.

Speed is the distance something travels in a set amount of time.

Speed is how far something travels in one hour.

Speed is how fast it takes something to travel a set distance

Speed is the change in velocity of something.

What happens when two forces act in the same direction?

Their sum divided by the two is the total force.

Speed is different from velocity because

Velocity doesn't include distance

Which ball will hit the ground first?

They will all hit at the same time

Metal first, then plastic, then wood last

Wood first, then plastic, then metal last

Which object will hit the ground first?

Object A because it is round, and has less surface area

They will hit at the same time.

Object B because it has a large surface area.

Force and Motion Benchmark Review

Authored by Charlene Walker

Science

8th Grade

NGSS covered

Used 96+ times

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72 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

The change in a objects position is________.

Force

Motion

Reaction

movement

Tags

NGSS.MS-PS2-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When a car drives by, we know it is in motion because we use a ______________.

ruler

car

reference point

object

Tags

NGSS.3-PS2-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Tug of war is an example of what kind of force.

typical force

normal force

balanced force

direct force

Tags

NGSS.MS-PS2-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The weight of an object is different from planet to planet depending on the planets gravity.

True

False

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The force that pulls all objects toward each other is called_______?

push

pull

gravity

mass

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A ball is rolled across a carpet. Then the ball is rolled on a smooth surface. Which explains why the ball rolls slower on the surface covered by carpet than on the smooth surface?

There is more gravity between the ball and the carpet.

There is no friction between the ball and the carpet.

There is more friction between the ball and the carpet.

There is less gravity between the ball and the carpet.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A force of the same strength is applied to two boxes. One box is 10 pounds and the other box is 20 pounds.
Which describes the motion of the boxes?

The larger box will move faster than the smaller box.

The boxes will move at the same speed.

The smaller box will move faster.

The boxes won't move at all.

Tags

NGSS.MS-PS2-2

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Force and Motion Benchmark Review

The change in a objects position is________.

When a car drives by, we know it is in motion because we use a ______________.

Tug of war is an example of what kind of force.

The weight of an object is different from planet to planet depending on the planets gravity.

The force that pulls all objects toward each other is called_______?

A ball is rolled across a carpet. Then the ball is rolled on a smooth surface. Which explains why the ball rolls slower on the surface covered by carpet than on the smooth surface?

A force of the same strength is applied to two boxes. One box is 10 pounds and the other box is 20 pounds.Which describes the motion of the boxes?

Barb and Trey are pushing a box toward one another with equal force. What would happen if Trey stopped pushing?

What may cause an object that is moving in a straight line to change direction?

What is air resistance?

Access all questions and much more by creating a free account

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A force of the same strength is applied to two boxes. One box is 10 pounds and the other box is 20 pounds.
Which describes the motion of the boxes?