Question 1

According to Aristotle, what type of motion is responsible for a stone falling to the ground?

Accepted Answer

Natural motion

Question 2

Which of the following best describes Galileo's concept of inertia?

Accepted Answer

Inertia is a property of matter that resists changes in motion and depends on mass.

Question 3

A cart is pulled to the right with a force of 15 N and to the left with a force of 20 N. What is the net force acting on the cart?

Accepted Answer

$$5\ \mathrm{N} to $$the left

Question 4

Which equation represents the equilibrium rule for forces acting on a nonaccelerating object?

Accepted Answer

$$\sum F = 0$$

Question 5

If you stand on two bathroom scales with your weight evenly distributed, what will each scale read?

Accepted Answer

Half your weight

Question 6

Which of the following is a vector quantity?

Accepted Answer

Velocity

Question 7

A hockey puck slides at constant speed on slippery ice. What type of equilibrium is this?

Accepted Answer

Dynamic equilibrium

Question 8

Which rule is used to find the resultant of two vectors at right angles to each other?

Accepted Answer

Pythagorean Theorem: $$R^2$$ = $$V^2$$ + $$H^2$$

Question 9

You push a crate at a steady speed in a straight line. If the friction force is $$75\ \mathrm{N}$$, how much force must you apply?

Accepted Answer

Equal to $$75\ \mathrm{N}$$

Question 10

Which of the following statements about the moving Earth is correct according to Copernicus?

Accepted Answer

Earth and other planets circle around the Sun.

Question 11

If you toss a coin straight upward while riding in a vehicle at a steady speed, where will the coin land?

Accepted Answer

In your hand

Question 12

Which of the following is NOT a scalar quantity?

Accepted Answer

Acceleration

Question 13

What is the support force acting on a book resting on a table?

Accepted Answer

An upward force equal to the book's weight

Question 14

Which of the following is true about objects in equilibrium?

Accepted Answer

They experience no net force and no change in motion.

Question 15

Galileo's use of inclined planes helped him to discover which property?

Accepted Answer

Inertia

Question 16

Which of the following is the correct definition of net force?

Accepted Answer

The combination of all forces acting on an object

Question 17

If two forces of $$5\ \mathrm{N}$$ act in opposite directions on an object, what is the net force?

Accepted Answer

$$0\ \mathrm{N}$$

Question 18

Which side of the rope has greater tension when Nellie Newton hangs from it at different angles?

Accepted Answer

The side with the smaller angle to the vertical

Question 19

Which of the following is a real-world example of dynamic equilibrium?

Accepted Answer

A hockey puck sliding at constant speed on ice

Question 20

Which of the following statements about the equilibrium rule $$\sum F = 0 is $$correct?

Accepted Answer

It applies to vector quantities only.

Newton's First Law of Motion—Inertia: Structured Study Notes

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