Question 1

A 20 kg box rests on a horizontal surface. What is the normal force acting on the box?

Accepted Answer

$$200\ \mathrm{N}$$

Question 2

Which of Newton's Laws states that for every action there is an equal and opposite reaction?

Accepted Answer

Newton's Third Law

Question 3

A 30 N force pulls a 40 kg sled to the left. If the force of friction acting on the sled is 10 N, what is the acceleration of the sled?

Accepted Answer

$$0.5\ \mathrm{m/s^2$}$$\ to\ the\ left$

Question 4

What is the weight of a 50 kg object on Earth?

Accepted Answer

$$490\ \mathrm{N}$$

Question 5

A 1000 kg car accelerates to the right at $$2\ \mathrm{m/s^2$}. If $$the friction acting on the car is $$800\ \mathrm{N} to $$the left, what is the net force acting on the car?

Accepted Answer

$$2800\ \mathrm{N}$$\ to\ the\ right$

Question 6

If a 300 N girl holds a 50 N box, what is the normal force acting on the girl?

Accepted Answer

$$350\ \mathrm{N}$$

Question 7

Which of the following best describes inertia?

Accepted Answer

The tendency of an object to resist changes in its motion

Question 8

A 400 N force pushes a wagon to the right. If the friction acting on the wagon is $$200\ \mathrm{N}$$ and the acceleration is $$0.5\ \mathrm{m/s^2$}$$, what is the mass of the wagon?

Accepted Answer

$$400\ \mathrm{kg}$$

Question 9

If the force of friction is $$30\ \mathrm{N}$$ and the normal force acting on the object is $$120\ \mathrm{N}$$, what is the coefficient of friction?

Accepted Answer

$$0.25$$

Question 10

A 25 N force pulls an object left while a 15 N force pulls it right. What is the net force?

Accepted Answer

$$10\ \mathrm{N}$$\ left$

Question 11

Which of Newton's Laws can be written as $$F=ma$$?

Accepted Answer

Newton's Second Law

Question 12

A train sitting still on the tracks is an example of which of Newton's Laws?

Accepted Answer

Newton's First Law

Question 13

The collision between a baseball and bat is an example of which of Newton's Laws?

Accepted Answer

Newton's Third Law

Question 14

The drop on the Tower of Terror exemplifies which of Newton's Laws?

Accepted Answer

Newton's First Law

Question 15

What is the normal force acting on a 40 kg boy standing on the ground?

Accepted Answer

$$392\ \mathrm{N}$$

Question 16

If a 50 N force pulls a 10 kg sled to the right, while a 10 N force acts to the left, what is the acceleration of the sled?

Accepted Answer

$$4\ \mathrm{m/s^2$}$$\ to\ the\ right$

Question 17

Which term means 'perpendicular' in the context of forces?

Accepted Answer

Normal

Physics with Calculus Study Guide: Forces, Mass, Weight, and Newton's Laws

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