To get the net (sum) force of two forces that are acting on the same object but in opposite directions, you would

get the difference between the two forces (subtract)

A toy car was used in an investigation about forces. During which of the following scenarios was the car experiencing balanced forces?

The toy car travels forward at a constant speed.

The toy car speeds up as it rolls down a ramp.

The toy car slows down as it rolls up a hill.

The toy car changes direction at a constant speed.

The diagram below shows a skateboarder pushing himself forward with a force of 25 N while the wind pushes back with a force of 5 N. How will the skateboarder be affected if the force of the wind increases to 8 N ?

The speed of the skateboarder will decrease.

The speed of the skateboarder will increase.

The speed of the skateboarder will remain constant.

The skateboarder will come to a stop.

If a= F/m, the acceleration of an object depends on which two things?

Force applied to the object and the object's mass

speed of the object and its direction

velocity of the object and force applied to the object

velocity of the object and its mass

You are trying to help Sally move a table to the right. What should you do?

add your force in the same direction as Sally, to the right

add your force in the opposite direction (to the left)

add your force to a different object than the table

increase the friction between the table and the floor

the reason why objects slow down and eventually come to a stop

What happens when unbalanced forces act on an object at rest?

the object begins moving in the direction of the net force

the object begins moving in an unpredictable direction

the object begins moving opposite to the direction of net force

A push or pull exerted on an object

What is Newton's 2nd Law?

Every action has an equal and opposite reaction

An object at rest stays at rest, an object in motion stays in motion.

U1M1L2 Review

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS2-2, 3-PS2-1, HS-PS2-1

+2

Standards-aligned

Laura Andrew

Used 401+ times

FREE Resource

26 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Is the phet picture showing balanced or unbalanced forces?

balanced forces

unbalanced forces

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Is the phet picture showing balanced or unbalanced forces?

balanced forces

unbalanced forces

Tags

NGSS.MS-PS2-2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The sum (net) forces show that the object will

accelerate to the left

no change in motion

accelerate to the right

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Forces that are acting on an object but cancel each other out because they are going in opposite directions are called

unbalanced forces

balanced forces

friction

gravity

Tags

NGSS.3-PS2-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the sum of the forces acting on an object add up to more than 0, the forces are

equal

opposite

balanced

unbalanced

Tags

NGSS.MS-PS2-2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens if a force is added to an object??

the object speeds up

the object changes direction

the object speeds up and changes direction

the object speeds up or slows down and can change direction, depending how much force is added and in which direction

Tags

NGSS.HS-PS2-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Unbalanced forces cause

change in motion

speeding up, slowing down, and/or changing direction

acceleration

all answers are correct

Tags

NGSS.MS-PS2-2

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U1M1L2 Review

26 questions

Is the phet picture showing balanced or unbalanced forces?

Is the phet picture showing balanced or unbalanced forces?

The sum (net) forces show that the object will

Forces that are acting on an object but cancel each other out because they are going in opposite directions are called

If the sum of the forces acting on an object add up to more than 0, the forces are

What happens if a force is added to an object??

Unbalanced forces cause

Balanced forces cause

To get the net (sum) force of two forces that are acting on the same object but in opposite directions, you would

What is the net (sum) of the forces acting on the object?

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