Newton's Laws And Applications
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Newton's 3rd law of motion and applications.
- 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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