Force and Motion Unit Assessment - Deb Hicks | Laabri

1

Which of the blocks shown would not move when exposed to the forces ?

Block C

Block D

Block A

Block B

10

Which best describes average speed?

A: The rate at which an object is traveling at a given time.

B: The rate at which an object travels over a period of time.

C: A change in the motion of an object.

D: A distance between two objects over time.

1

A

B

C

D

10

A kayaker paddles along a river for four hours. In that time, she manages to move a total of 20 miles. What is the average speed of the kayak for this trip?

A: 20 mph

B: 4 mph

C: 5 mph

D: 16 mph

1

A

B

C

D

1

Work is performed when

an object is moved

a force pushes an object a certain distance

a balanced force allows an object to remain stationary

a force acts on a specific area

6

Evan and Jaelin are pushing Evan's truck with a dead battery with forces of 20 N and 25 N in the same direction. What is the net force applied on the truck? Draw arrows with on the picture showing the forces and tell whether your equation is balanced or unbalanced.

8.P.2A.2

8.P.2A.4

8.P.2A.5

1

Friction between surfaces can be reduced by all of the following EXCEPT:

Smoothing the surfaces.

Using wheels or rollers.

Lubricating or rolling the surfaces.

Increasing the mass of the objects.

8.P.2A.5

1

What will happen to the mass of a ball if it is moved from Earth to the Moon?

A. The mass will increase.

B. The mass will decrease.

C. The mass will not exist.

D. The mass will remain the same.

1

What is the measure of the gravitational force on Earth?

A. mass

B. weight

C. energy

D. inertia

1

What is the difference between mass and weight?

A. Mass is the amount of matter in an object, and weight is the pull of gravity on an object.

B. Weight is the amount of matter in an object, and mass is the pull of gravity on an object.

C. Mass is always more than weight.

D. Weight is always more than mass.

1

____________________ is done whenever a force moves an object through a distance.

1

Label at least 4 forces that are at play in this car accident.

1

If you hit a wall with 100 N, what happens?

The Wall will hit back with 50 N

The Wall will hit back with 100 N

The Wall will not do anything

The Wall will move

5

Select all the examples of action/reaction

hero's engine

bouncing ball

walking

acceleration

1

If the force of friction is resisting the student's push of 4 N, what is the net force acting on the board?

F

G

H

J

1

What is the ball's average speed during the time represented in the graph?

F

G

H

J

1

If the load exerts a strong downward force, the glue -

A

B

C

D

1

How much power is needed?

F

G

H

J

1

When do the laws of motion apply to objects?

all the time

when they are at rest

when they change direction

when they are accelerating