Newton's Laws and Free Body Diagrams

Question 1

The force a surface exerts upon an object resting upon it is...

Accepted Answer

Normal

Question 2

For every action, there is an equal and opposite reation. This describes...

Accepted Answer

Newton's Third Law

Question 3

Describe Newton's First Law in one word:

Accepted Answer

Intertia

Question 4

When you do a push-up, you push against the floor and it pushes back. This illustrates...

Accepted Answer

Newton's 3rd Law

Question 5

Who discovered the laws of gravity?

Accepted Answer

Isaac Newton

Question 6

The units for Force are:

Accepted Answer

Newtons (N)

Question 7

Weight is the measurement of the force of gravity?

Accepted Answer

True

Question 8

A box is left on the tailgate of a truck. The truck quickly accelerates forward. What happens?

Accepted Answer

It falls off the edge of the tailgate.

Question 9

The equation to solve for Force is:

Accepted Answer

F= ma

Question 10

A LEFT applied force = 5N. A RIGHT friction force = 3N. The NET force = ?

Accepted Answer

2N LEFT

Question 11

What can be described as a "push" or a "pull"?

Accepted Answer

Force

Question 12

A sled is slowing down to a halt. What forces are acting on the sled?

Accepted Answer

Gravity, Normal, Friction

Question 13

Which force is usually neglected because it is often too small to make a difference?

Accepted Answer

Air Resistance

Question 14

An object will accelerate when....

Accepted Answer

Forces are unbalanced

Question 15

The tendency of an object in motion (or at rest) to stay in motion (or at rest) is....?

Accepted Answer

Inertia

Question 16

In a Free Body Diagram with two balanced forces, the forces' arrows will be....

Accepted Answer

The same length

Question 17

Person 1 pulls with 5N to the RIGHT. Person 2 pulls with 10N to the LEFT. What is the NET?

Accepted Answer

-5N

Question 18

In a Free Body Diagram with two unbalanced forces, the larger force's arrow will be....

Accepted Answer

Longer than the other force

Question 19

In what direction does friction act?

Accepted Answer

Against the motion

Question 20

Gravity pulls DOWN at 6N. Normal pushes UP at 6N. This describes....

Accepted Answer

Balanced Forces

Question 21

Which force is always considered in a free body diagram?

Accepted Answer

Gravity

Questions 21