Unit 5 Test: Energy, Motion, & Forces- 1st period

What force pulls a skydiver to the ground?

• friction

• gravity

• air resistance

• parachute pull

Tags

NGSS.MS-PS2-4

What is the scientific meaning of energy?

• anything that has mass

• the ability to cause change

• anything that cannot be seen

• the property of something to take up space

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Based on evidence in the graph, which object had the greatest average speed?

• object A

• object B

• object C

• object D

Tags

NGSS.MS-PS3-1

A moving object collides with a stationary object. Which of the following statements is true according to Newton’s third law of motion?

• Each object exerts a force on the other, and the two forces are equal and in opposite directions.

• Each object exerts a force on the other, and the two forces are the same in magnitude and direction.

• Each object exerts a force on the other, and the two forces are proportional to the masses of the objects.

• The moving object exerts a force on the stationary object, but the stationary object does not exert a force on the moving object.

Tags

NGSS.MS-PS2-1

Which of these is an example of the conversion of POTENTIAL energy to KINETIC energy?

• a person running on a level track

• an apple falling from a tree to the ground

• a windup spring making a toy car move across the floor

• a rubber band that is being stretched to twice its normal length

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Which two measurements are needed to determine the speed of an object?

• distance and time

• distance and direction

• position and time

• position and direction

What describes the tendency of a moving object to continue moving at the same velocity? (*hint: Newton's first law)

• acceleration

• friction

• gravity

• inertia

A car is traveling at 9 m/s. The car’s speed increases to 18 m/s in 3 s as it passes a truck ahead of it. What is the acceleration of the car?

• 3 m/s

• 6 m/s

• 3 m/s²

• 6 m/s²

Tags

NGSS.MS-PS2-2

Julia is in a car with her father. The car is undergoing centripetal acceleration. What is happening to the car?

• The car is changing direction and speeding up.

• The car is changing direction and slowing down.

• The car is changing direction at a constant speed.

• The car is stopping suddenly.

The law of universal gravity describes two factors that affect the force of gravity between objects. What two factors affect gravity?

• velocity and weight

• distance and mass

• mass and volume

• distance and speed