10 Questions
| Attempts: 763

Newton's 3rd law of motion and applications.

Questions and Answers

- 1.The change of velocity over time is called ___________.
- A.
Acceleration

- B.
Speed

- C.
Distance

- 2.Change in position is called ____________.
- A.
Velocity

- B.
Displacement

- C.
Rate

- 3.If a mass is at rest, what must be applied to cause it to move?
- A.
Kilograms

- B.
Speed

- C.
Vectors

- D.
Force

- 4.The property of mass that resists changes in velocity is called ___________________.
- A.
Inertia

- B.
Weight

- C.
Acceleration

- D.
Kilograms

- 5.The SI units of force are called _____________.
- A.
Newtons

- B.
Kilograms

- C.
Pounds

- D.
Meters squared

- 6.If you push on a wall with a force of 30 N, then ______________.
- A.
The wall pushes on you with a force of 30 N.

- B.
The wall moves back 3 cm.

- C.
The wall cannot be forced.

- D.
You are pulled towards the wall.

- 7.When you jump into the air, what is actually pushing you up?
- A.
The floor pushes back on you as a reaction to you pushing down on the floor.

- B.
You are pushed up by your own muscles.

- C.
The air pushes up on you.

- D.
You are pulled up by gravity.

- 8.If gravity is pulling you down, why don't you sink to the middle of the earth?
- A.
Gravity only works at the surface of the earth.

- B.
The ground applies an upward force on you equal to the downward force of gravity.

- C.
The spinning of the earth pushes you up.

- D.
The gravity of the moon pulls up on you.

- 9.If you have to push a car forward, what are the forces acting on you?
- A.
The car pushes back on you, gravity pulls you down, the ground pushes up on you, and friction on your shoes pushes forward on you.

- B.
Only gravity.

- C.
Your own muscles push you down.

- D.
No forces act on you.

- 10.If you are traveling at constant speed in one direction, what is true about the forces acting on you?
- A.
There are no forces acting on you.

- B.
All forces acting on you are balanced by equal forces from the opposite direction.

- C.
Force is only acting on you in one direction.

- D.
Your acceleration must be greater than 0.

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