If a sack of potatoes is dropped, where would it have the most kinetic energy?

Right before it hits the ground.

If I pushed against the wall, how would the force of the wall respond (based on the Third Law)?

It would push with a force equal and opposite to you

If someone were to throw you into the sky, where would you have the most inertia?

The inertia would stay the same because it varies with mass.

First of all, as a reminder, what is physics?

The study of matter, energy and the interactions between.

If someone were to throw you into the sky, where would you have the most inertia?

The inertia would stay the same because it varies with mass.

What is Newton's Second Law of Motion?

Force equals mass times acceleration.

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Physics Quiz

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A Quiz for reviewing the past concepts of physics, such as Newton's Laws, free fall, energy and power.

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Questions 16

Answers

1
What does inertia vary with, out of the following?
Height, or distance
Mass
Weight
The force of an object
2
What unit is pressure measured in?
Pascals
Foes
Joules
Newtons
3
What is another term for "an object's tendency to resist changes in it's state of motion"?
Force
Velocity
Inertia
Gravity
4
If a sack of potatoes is dropped, where would it have the most kinetic energy?
Right as it leaves your hand.
Right in the direct middle of the fall.
Right before it hits the ground.
Nowhere; the kinetic energy is constant at all times.
5
How do we define kinetic energy?
The energy of force.
The energy of motion.
Uh...energy that's kinetic...?
The energy of gravity.
6
If I pushed against the wall, how would the force of the wall respond (based on the Third Law)?
It would push back with less force because it is still there
None of these, because it depends on your mass.
It would push with a force equal and opposite to you
The wall would push back harder on you because it's heavier
7
If someone were to throw you into the sky, where would you have the most inertia?
The inertia would stay the same because it varies with mass.
Right as it leaves you, because of the force of your hand.
At the very top of it's path, because gravity acts on it.
Uh, I'd be screaming for my life.
8
True or False: Joules are equivalent to Newton-Meters.
False
True
9
True or False: Displacement and distance are the same thing.
False
True
10
First of all, as a reminder, what is physics?
The study of life, cells and the structure of plants.
The study of thought, logic and reasoning.
The study of matter, energy and the interactions between.
The study of rocks, geological formations and the Earth.
11
What is defined as "the ability to do work"?
Watts
Power
Gravity
Energy
12
If Ms. Mak runs a full 400m around the 400m track in 76 seconds, what is her displacement?
0m
400m
10m
5.26m
13
If someone were to throw you into the sky, where would you have the most inertia?
At the very top of it's path, because gravity acts on it.
The inertia would stay the same because it varies with mass.
Uh, I'd be screaming for my life.
Right as it leaves you, because of the force of your hand.
14
You ride a unicorn off a cliff. If it takes 13 sec. to fall, what is the height of the cliff?
850m
320m
130m
1.6m
15
If a ferret was sliding with a mass of 4kg, and an acceleration of 7m/s², what is it's force?
28 Newtons
1.75 Newtons
24 Watts
32 Joules
16
What is Newton's Second Law of Motion?
Force equals mass times acceleration.
It's obviously that inertia thingie, duh.
Work equals force times distance.
Power equals work divided by time.

Physics Quiz Flashcards | StudBud