Big Idea 13 - Force and Motion

To move the heavy box shown, Kylie and her friends lifted it onto a cart with wheels. Why was it easier to move the box by placing it on wheels than by sliding it?

• There was less mass.

• There was less friction.

• There was less density.

• There was less gravity.

A ball is sitting loose on a flat wagon that is going in the direction of the arrow. If the wagon suddenly stops, the ball will

• also suddenly stop

• roll forward in the wagon towards the handle

• roll backward in the wagon away from the handle

• bounce up and down

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

You are pushing a box. The force is shown with an arrow. The box does not move. What keeps the box from moving even though you are pushing on it?

• You are pushing the box in the wrong direction.

• There is too much air resistance to move the box.

• The force of friction is opposing the force you exert.

• The force of gravity is opposing the force you exert.

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NGSS.MS-PS2-2

During summer break, Cathy spent many days playing different sports. In one week, she went bowling, played soccer, softball, and beach volleyball. Cathy felt that moving the bowling ball required the most force. Why would it require more force?

• It has the most mass.

• Bowling is an indoor sport.

• The bowling ball is all black, while the other balls have white on them.

• Cathy has to put her fingers in the bowling ball.

Tags

NGSS.MS-PS2-2

Philip loads three books onto a cart and pushes it halfway down a track. At this point, he loads six more books onto the cart. What must Philip do when pushing the cart to the end of the track?

• use less force

• use more force

• use the same amount of force

• use no force

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NGSS.MS-PS2-2

Ben put different masses on each of the carts. He then launched each cart from the same starting point using the same amount of force. Ben measured how far each cart rolled from the starting point.How will the force of the launch affect the carts?

• Cart 3 will travel the longest distance.

• Cart 1 will travel the shortest distance.

• Cart 3 will have the least change in its motion.

• Cart 1 will have the greatest change in its motion.

Tags

NGSS.MS-PS2-2

The four balls below are about to be struck by a stick. If the balls are hit with the same force in the same direction, which ball will go farthest?

• ball 1

• ball 2

• ball 3

• ball 4

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Felipe and Marsha were studying friction and decided to do an experiment. They place four equally sized blocks made of different materials on an elevated plastic tray. They watched the blocks move down the tray. Which block would experience the least amount of friction as it moved down the tray?

• ice block

• sponge block

• sandpaper block

• plastic block

Which statement best describes what must happen in order for a person to lift an object?

• The force of gravity must be greater than the mass of the object.

• The mass of the object must be greater than the force of gravity.

• The force of gravity must be greater than the upward pull or push on the object.

• The upward push or pull on the object must be greater than the force of gravity.

Tags

NGSS.MS-PS2-4

When you drop an object, what causes it to fall to the ground?

• The push from you

• Magnetism

• Gravity

• Air resistance

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

NGSS.MS-PS2-4