Forces & Motion UNIT Review

Question 1

When a force is applied to an object, causing it to accelerate, the forces are said to be

Accepted Answer

unbalanced

Question 2

When objects move farther apart, the gravitational attraction between them:

Accepted Answer

decreases

Question 3

75 km/h is an example of a...

Accepted Answer

speed

Question 4

What is the net force?

Accepted Answer

4 N left

Question 5

What kind of graph is used to display data about motion?

Accepted Answer

distance & time

Question 6

Motion is described in relation to....

Accepted Answer

a reference point

Question 7

What force pushes up against the leaf?

Accepted Answer

friction (air resistance)

Question 8

30 m/s south is an example of a...

Accepted Answer

velocity

Question 9

When speed increases, or is not constant

Accepted Answer

acceleration

Question 10

An object at rest or at constant speed is considered

Accepted Answer

balanced

Question 11

What force causes the leaf to move toward the Earth?

Accepted Answer

gravity

Question 12

What is the net force?

Accepted Answer

6 N right

Question 13

Which needs more force to move and therefore has greater inertia?

Accepted Answer

Elephant

Question 14

Displacement indicates the distance between the start and stop point, as well as:

Accepted Answer

direction

Question 15

What are you measuring when you take distance over time (not counting direction)?

Accepted Answer

speed

Question 16

Speed AND direction is:

Accepted Answer

Velocity

Question 17

What force causes rope burn?

Accepted Answer

friction

Question 18

Newton's Laws of Motion were named for:

Accepted Answer

Sir Isaac Netwon

Question 19

Why does the truck require the force of so many people to move?

Accepted Answer

mo' mass, mo' inertia

Questions 19