Ch. 3 pt 1-

Question 1

In English system, the most common unit of pressure is __.

Answer 1

pounds per square inch (psi)

Question 2

T/F: A large change in an object’s state of motion may result from a small force acting for a relatively long time or from a large force acting for a relatively short time.

Answer 2

True

Question 3

__ is mass per unit of volume.

Answer 3

Density

Question 4

What are the 2 common units of pressure in the metric system?

Answer 4

Pascal and N per square centimeter (N/cm^2)

Question 5

In the context of volume, identify an accurate statement about one liter.

Answer 5

1l = 1000 cm^3

Question 6

What are the 2 units of torque?

Answer 6

Newton-meter and Foot-pound

Question 7

The product of force and the time over which the force acts is known as __.

Answer 7

impulse

Question 8

In the metric system, a common unit of density is the __.

Answer 8

kilogram per cubic meter (kg/m^3)

Question 9

__ is the rotary effect of a force.

Answer 9

Torque

Question 10

The tendency of a body to resist a change in its state of motion is known as __.

Answer 10

inertia

Question 11

The common unit of mass in the metric system is the __.

Answer 11

kilogram (kg)

Question 12

A hockey puck will continue to slide across the ice after being hit by a player. This phenomenon is an example of __.

Answer 12

inertia

Question 13

T/F: The direction in which weight acts is always toward the center of the earth.

Answer 13

True

Question 14

What are the 3 common units of volume in the metric system?

Answer 14

Cubic centimeters, Cubic meters, and Liters

Question 15

T/F: Force is the product of mass and acceleration.

Answer 15

True

Question 16

Newton is the amount of force required to __.

Answer 16

accelerate 1 kg of mass at 1m/s^2 OR (1kg)(1m/s^2)

Question 17

Algebraically, the product of force and the perpendicular distance from the force’s line of action to the axis of rotation is known as __.

Answer 17

torque

Question 18

The mechanical definition of __ is resistance to acceleration.

Answer 18

inertia

Question 19

Any object, body, or body part that is being focused upon for analysis is known as a(n) __ __.

Answer 19

free body

Question 20

The resultant force derived from the composition of 2 or more forces is known as __ __.

Answer 20

net force

Question 21

A body’s __ is the point around which the body’s weight is equally balanced, no matter how the body is positioned.

Answer 21

center of gravity

Question 22

Algebraically, mass multiplied by the acceleration of gravity equals __.

Answer 22

weight

Question 23

A soccer ball lying motionless on the floor has a tendency to remain motionless unless it is acted upon by an external force. This is an example of __.

Answer 23

inertia

Question 24

The English unit of mass is the __.

Answer 24

slug

Question 25

The force per unit of area over which force acts is known as __.

Answer 25

pressure

Question 26

__ can be thought of as a push or pull acting on a body.

Answer 26

Force

Question 27

In the metric system, the most common unit of force is the __.

Answer 27

newton

Question 28

A sketch that shows a defined system in isolation with all of the force vectors acting on the system is known as a __.

Answer 28

free body diagram

Question 29

The vector sum of all of the acting forces is known as __.

Answer 29

net force