Two people run at each other with exercise balls in their arms. The smaller person goes flying after they hit while the larger person stays in place. Which of Newton’s Laws does this best illustrate?

• Newton's First Law
• Newton's Second Law
• Newton's Third Law

Tags

NGSS.MS-PS2-1

A magician pulls a tablecloth out from under the place settings without moving any of the items on the table. Which of Newton’s Laws does this best illustrate?

• Newton's First Law
• Newton's Second Law
• Newton's Third Law

A golfer swings softly to make a putt, and the ball gently rolls into the hole. Which of Newton’s Laws does this best illustrate?

• Newton's First Law
• Newton's Second Law
• Newton's Third Law

To have done work, according to the scientific definition, you must have used ___________ to move an object a ____________

• force, distance
• work, time
• mass, force

Power is the amount of ______ done in a certain amount of ________.

• force, distance
• work, time
• mass, force

_______________________ is how much your applied force is increased by a tool, such as one of the simple machines.

• mechanical advantage
• resistance force
• effort force

Two students are helping a teacher clean up their room. One student is sitting at a desk, looking over a test for mistakes. The other student is moving books from one shelf to another. Using the scientific definition,…

• Both students are doing work.
• Only the student who is sitting is doing work.
• Only the student who is moving books is doing work.
• Neither one of them is doing work.

Fred’s car is stuck in the mud. He gets out to push while his wife sits at the wheel to push the gas pedal down and steer. Using the scientific definition,…

• Both of them are doing work.
• Only Fred's wife is doing work.
• Only Fred is doing work.
• Neither one of them is doing work.

Machine A can do 10,000 Joules of work in 5 minutes. Machine B can do 5,000 N of work in 2 minutes. Which machine has more power?

• Machine A
• Machine B

Tags

NGSS.MS-PS3-5

You push a broom with a force of 5 N for a distance of 20 m. How much work did you do?