Forces and Motion Mastery Exam

Which combinations of forces would best move a large, heavy box across a room? Choose the three statements that apply.

• Two people push on the box from the same side.
• Two people pull on the box from the same side.
• One person pushes on one side of the box, and one person pulls from the other side of the box.
• One person pushes on one side of the box, and one person pulls from the same side of the box.

Tags

NGSS.MS-PS2-2

Choose the words that correctly complete the sentence. The force of __________ pulls two objects together, but it decreases as the __________ between the objects increases.

• gravity; motion
• gravity; distance
• friction; motion
• friction; distance

Which of the following objects will change speed the slowest when the same force is applied?

• a 8 kg bicycle
• a 1 kg toy truck
• a 20 kg wagon full of sand
• a 2 kg playground ball

Tags

NGSS.MS-PS2-2

What is determined by the distance an object travels and the time it takes to travel that distance?

• direction
• mass
• speed
• force

Suppose a bulldozer is being hauled at 50 km/h to a construction site on the back of a flatbed truck. From which reference point would the bulldozer not appear to be moving?

• the road
• a traffic light
• the truck driver
• a roadside tree

Carmen is helping load furniture and boxes onto a moving truck. She picks up boxes of her things, places them on a cart, and pushes the cart to the moving van. Which term best describes the type of force Carmen uses?

• contact
• friction
• gravity
• noncontact

Tags

NGSS.3-PS2-1

Ahmed saw all of these things as he walked to school this morning. Which one is an example of a force pushing downward toward the ground?

• A bird sat on a telephone wire.
• A woman moved her child from one place to another in a wagon.
• A man pulled weeds in his garden.
• A dog tugged on a rope a child held.

Tags

NGSS.5-PS2-1

Mr. Wang works in a recycling center. Recyclable materials arrive at the center mixed together. Workers use magnets to separate steel cans from other items. Which two statements are true about the force between a steel can and a magnet?

• Gravity pushes the can toward the magnet.
• The force between the can and the magnet is a noncontact force.
• The attraction between the can and the magnet is a pull.
• The attraction between the can and the magnet is a push.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Keisha has two large dogs and a small dog. The dogs like to play tug-the-rope together. Each of these three diagrams shows one way that the dogs play together with the rope. Look at each arrow and the number that goes with it. They show the direction and amount of force each dog exerts on the rope. Look at the middle diagram, where the large dog and the small dog tug on the rope. Which statement correctly explains the amount and direction of the net force acting on the rope, and which direction the rope will move?

• The net force is 8 N to the left, and the rope will move to the right.
• The net force is 8 N to the left, and the rope will move to the left.
• The net force is 32 N to the left, and the rope will move to the left.
• The net force is 32 N to the right, and the rope will move to the right.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Vivian went on a bicycle trip through Germany with her family. One afternoon, she rode her bicycle along a long flat road at a constant speed for 24 kilometers (km). The ride took her 1.2 hours (h). At what speed did she ride her bicycle?

• 0.05 h/km
• 20 mi/h
• 20 km/h
• 28.8 km•h