Force, Motion & Simple Machines

Two matchbox cars are rolling toward each other. Car A was pushed with more force than Car B. What will most likely happen when the cars hit each other?

• Car A will stop, Car B will change direction.

• Car A will change direction, Car B will stop.

• Car B will keep going forward, Car A will stop.

• Car A will keep going forward, Car B will stop.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Two friends, Sara and Ben, want to play on the seasaw. Each friend weighs the same amount. What will most likely happen when they get on the seasaw?

• Sara and Ben won't move because the forces are balanced.

• Sara and Ben won't move because the forces are unbalanced.

• Sara will go up and Ben will go down.

• Ben will go up and Sara will go down.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Ms. Heimerich's class of students, all 28 of them, are going to play tug-a-war with Ms. Heimerich at recess today. What will most likely happen when everyone tugs on the rope?

• Ms. Heimerich will win because she is older.

• The students will win because they are younger.

• The students will win because they are 28 people pulling on the rope causing the force to be unbalanced.

• Ms. Heimerich will win because she will be able to pull with a greater force than 28 students causing the force to be unbalanced.

Tags

NGSS.MS-PS2-2

Mrs. Coleman's students are trying to move boxes of books. All of the books have some size and weight. One box has 2 books and another box has 10 books. What evidence could you use to support the claim that you need more force to move the box with 10 books?

• It will take more force because all the books are the same size.

• It will take more force because all the books weigh the same.

• It will take more force because the box with 10 books weighs less.

• It will take more force because the box with 10 books weighs more.

Tags

NGSS.MS-PS2-2

A student claims that when he throws a baseball into the air, the force of gravity impacts the baseball. Which piece of evidence would support the student's claim?

• The baseball moves at quick speed the moment the ball leaves the students hands.

• The baseball slows down and falls towards the ground.

• The baseball goes up towards the sky when the ball is thrown.

• The ball is caught by the catcher.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What type of simple machine is at the bottom of a light bulb?

• lever
• wheel
• wedge
• screw

Which complex machine could be made by combining a wheel and axle and a lever?

• wheelbarrow
• axe
• shovel
• scissors

Tags

NGSS.MS-ETS1-4

NGSS.MS-PS2-1

What are the simple machine parts in a bicycle?

• wheel, blade, chain
• chain and pedals
• lever, chain, pedals
• chain, pedals, wheel 

What two simple machines make up scissors?

• wheel and axle
• lever and wedge
• wedge and inclined plans
• inclined plane and lever

Tags

NGSS.MS-PS2-2

Mr. Smith uses a ramp to load a heavy box onto the back of his truck. By using the ramp, instead of just lifting the box, Mr. Smith ____________.

• needs to do less force
• does less work
• has a harder job to do
• does more work

Tags

NGSS.MS-ETS1-1