The graph below shows the movement of an object at several points in time. What is the average speed of the object?

• .5 meters/minute

• 2 meters/minute

• 25 meters/minute

• 50 meters/minute

Tags

NGSS.MS-PS3-1

The graph below shows the distance a student walks down a hall over time. During which time interval were they moving the fastest?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

A person starts driving and travels 3 km east to the store. The person then turns around and travels 1 km west to another store. Finally, the person travels 2 km west, back home. What distance have they traveled?

• 0 km

• 3 km

• 5 km

• 6 km

A technician wants to predict the velocity of a car that is traveling at a constant rate. Which graph will help the technician with this prediction?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

An airplane went from 120 m/s to 180 m/s in 4.0 seconds. What was its acceleration?

• 15 m/s²

• 30 m/s²

• 45 m/s²

• 60 m/s²

Tags

NGSS.HS-PS2-1

A driver starts her car and steps on the gas. A few minutes later she suddenly slams on the brakes to avoid hitting a box in the road. As the car comes to a stop her body lurches forward in the seat until it is restrained by the seatbelt. What law best explains why the driver's body lurches forward when the brakes are suddenly applied?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• The law of gravity

Tags

NGSS.MS-PS2-2

Four students push a block of wood with the forces shown in the diagram. Assume friction is neglible. The block slides horizontally. What is the net force acting on the block of wood?

• 3N to the left

• 8 N to the left

• 11 N to the right

• 25 N to the right

Tags

NGSS.MS-PS2-2

A car travels from A to B at a constant rate of 100 km/hr. Which of the following changes?

• speed

• velocity

• frame of reference

• speed and velocity

During a science demonstration, a teacher pushed cubes of different masses with different amounts of force. Which diagram shows the cube that will move most rapidly?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-2

A high diver steps off a diving platform that is 10 meters above the water. If no air resistance is present, during the fall there will be a decrease in the diver's

• gravitational potential energy (GPE)

• kinetic energy (KE)

• total mechanical energy

• momentum

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5