Test L.MULTIPLE CHOICE: Select the best answer and write the correct answer before the number

1. Which of the following is NOT an example of contact force?

A. Opening a door B. Carrying a bag

C. gravitational pull

2. What is the force if a bike accelerates at 10 m/s2 and has a mass of 30 kg?

A. 3 Newtons

B.300 Newtons

C40 Newtons

3.What is the net force? →N CAR SN

A 3 N left

B.3 N right

C.7 N left

4 Which of the following is the most difficult to accelerate?

A. 1 kg object

B. 2 kg object

C.3 kg object

d. cannot be determined

D. 5 Newtons

D.7N right

D. 4 kg object

5. The tendency of an object to resist any change m its motion is known as

A Force

B. Mass

C. Inertin

D. Net Force

6. A 1000 kg car is moving with a constant velocity of 10 m/s the net force acting on the car is

A ON

7 The

B. 1000N

C. 10 000N

D. 100 000N

is the energy that flows from the battery, through the wire in it's path through the

circuit A. Electric Current B.Conductor

C Electromagnet D.Insulator

8. If a car moves 150 kilometers in 3 hours, what is the car's speed in kilometers per hour?

A.450 km/hr

B. 50 km/hr

9. A person is nearsighted is he or she

A. Sees nearby objects blurry

B. Can see far away things very well

C. 75 km/hr

D.200 km/hr

C Has eyeballs that are a little too short

D. has eyeballs that are a little too long

10. A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?

A. 10 seconds 1000 m/s

11. The speed of sound depends on

A The pitch of the sound

B. The source of the sound

D.100 seconds D. 10 m/s

C. The loudness of the sound

D. the property of the medium it travels through

12. When light passes through a prism the hbght is bent and breaks into the visible spectrum. What color

bends the most and has the shortest wavelength?

A.Red

B.Yellow

C.Blue

13. What is the power required to lift a 10 kg object 5 m in the air in 2 s?

A. 250 W

B. 25 W

C. 100 W

D. 4 W

D.Violet

14. When you push a table by 50N force, Whatis the magnitude of the force of the table on you?
A. ON

B. 50N

C. less than 50N

D.more than 50N

15. The heat from a hot burner to a pot is transferred by

A.convection

B. conduction

C.radiation

D. insulation

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