Imprimir Froggy Jumps: Force Concepts (force - physics force concepts

1. Which of the following has the greatest inertia?

A

basketball

B

soccer ball

C

bowling ball

2. What Newton's Law is action-reaction?

A

Newton's 1st law

B

Newton's 3rd law

C

Newton's 2nd law

3. Which of the following is a balanced force?

A

a car accelerating

B

a hanging lamp

C

kicking a soccer ball

4. What is the force that is perpendicular to the surface?

A

friction force

B

gravitational force

C

normal force

5. Static friction is

A

always less than kinetic friction

B

always greater than kinetic friction

C

equal to kinetic friction

6. How much does a 45 kg person weigh?

A

45 N

B

4.58 N

C

445.41 N

7. The mass of an object is

A

directly proportional to the net force and inversely proportional to the acceleration

B

inversely proportional to the net force

C

directly proportional to the acceleration

8. Galileo's law of inertia is the same as

A

Newton's 3rd law

B

Newton's 2nd law

C

Newton's 1st law

9. F = ma

A

Newton's 2nd law

B

Newton's 1st law

C

Newton's 3rd law

10. Seatbelts are needed because of

A

Newton's 3rd law

B

Newton's 2nd law

C

Newton's 1st law

11. The force of opposition is called the

A

net force

B

normal force

C

friction force

12. Newton equals

A

kg m/s^2

B

kg m/s

C

kg m

13. If two dogs are pulling on a rope and the rope moves forward, the force is

A

balanced

B

unbalanced

C

equal

14. The length of an arrow in a force diagram shows the

A

direction of a vector

B

magnitude of a vector

C

amplification of a vector

15. The tendency of an object to resist change in its motion is known as

A

inertia

B

mass

C

force