Forces and Motion Exam

A car travels 200 meters in 25 seconds. Calculate the car's velocity. Recall: Velocity = distance ÷ time.

• 4 m/s

• 8 m/s

• 25 m/s

• 0.125 m/s

Noah is trying to open a heavy door by pushing it. What is Noah applying to the door?

• A type of energy

• A push or a pull

• The amount of matter in an object

• The speed of an object

Tags

NGSS.MS-PS2-2

Mia and Jackson are moving a box. Mia pushes the box to the right with a force of 40 N, while Jackson pushes to the left with a force of 15 N. Calculate the net force and state the direction.

• 55 N to the right

• 25 N to the right

• 25 N to the left

• 0 N (balanced)

Tags

NGSS.MS-PS2-2

Emma is riding her bicycle on a road. She notices that when she stops pedaling, her bicycle gradually slows down and eventually stops. What type of force opposes the motion of the bicycle and causes it to slow down?

• Applied force

• Gravitational force

• Friction

• Spring force

Tags

NGSS.MS-PS2-2

Emma is running on a track. She accelerates from 2 m/s to 8 m/s in 3 seconds. Calculate Emma's acceleration. Recall: Acceleration = Vf-Vi ÷ time.

• 1 m/s^2

• 2 m/s^2

• 3 m/s^2

• 0 m/s^2

Mason and Aiden are working on a project where two metal surfaces rub against each other, causing a lot of friction. Explain two ways they can reduce the friction between these surfaces. Select all that apply.

• Add a lubricant such as oil or grease between the surfaces

• Use wheels or ball bearings so the surfaces roll instead of slide

• Make the surfaces smoother or more polished

• Use rough sandpaper to increase the grip between the surfaces

Daniel is on a train that travels 450 meters in 30 seconds. What is the train's velocity? Recall: Velocity = distance ÷ time.

• 10 m/s

• 15 m/s

• 30 m/s

• 0.015 m/s

James accidentally drops his keys while walking outside. Which force is responsible for causing the keys to fall toward Earth's surface?

• Magnetic force

• Electric force

• Gravitational force

• Tension

Tags

NGSS.MS-PS2-4

Elijah is pushing a box. The box experiences three forces: 25 N up, 25 N down, and 10 N to the right. What is the net force acting on the box?

• 0 N (balanced)

• 10 N to the left

• 10 N to the right

• 50 N upward

Tags

NGSS.MS-PS2-2

Arjun pushes a box across the floor. The amount of force he uses is measured in which unit?

• Meters

• Kilograms

• Newtons

• Seconds