Forces and Motion STAAR Review

Question 1

What type of forces do not change the motion of an object?

Accepted Answer

balanced forces

Question 2

The units for Force is

Accepted Answer

Newtons

Question 3

_______________ is a force that resists the motion two surfaces that are touching.

Accepted Answer

Friction

Question 4

Mark rolls a ball at a speed of 12m/s. How far did the ball travel in 4 seconds?

Accepted Answer

48m

Question 5

What is the acceleration of a car if the force on the car is 1300N and the mass is 520kg?

Accepted Answer

2.5m/s2

Question 6

What is the difference between speed and velocity?

Accepted Answer

velocity needs a direction

Question 7

You push a toy with a force of 50N. The force of friction is 15N. What is the net force?

Accepted Answer

35 Newtons

Question 8

Newton's Second Law uses which formula?

Accepted Answer

F=ma

Question 9

More force is needed to accelerate an object with more mass than an object with less mass.

Accepted Answer

True

Question 10

What is the tendency of an object to resist a change in motion?

Accepted Answer

Inertia

Question 11

What is a net force?

Accepted Answer

total force acting upon an object

Question 12

The graph below represents a car that is doing what?

Accepted Answer

The car is stopped

Question 13

Which law states an object in motion will stay in motion unless an outside force acts upon it?

Accepted Answer

Law of Inertia

Question 14

What is Mrs. Block's favorite animal?

Accepted Answer

wolf

Question 15

An object at rest will ______________ if no outside forces are applied.

Accepted Answer

Stay at rest

Question 16

Your bicycle has a mass of 9kg. You accelerate at a rate of 2m/s2. What is the net force?

Accepted Answer

18 Newtons

Question 17

Forces always act in equal but opposite pairs is which law?

Accepted Answer

Law of Action-Reaction

Question 18

When two objects of different mass are moving at the same speed, which is harder to stop?

Accepted Answer

Object with more mass

Question 19

If Chris throws the baseball 80 meters in 4 seconds, what is the average speed of the baseball?

Accepted Answer

20 m/s

Question 20

The graph below represents a car that is doing what?

Accepted Answer

The car is coming back at a constant speed

Questions 20