Motion and Forces Test 10/6/15

Question 1

What is Motion?

Answer 1

The action of process of the changing of placement or position

Question 2

What is a force?

Answer 2

A push or pull measured in Newtons

Question 3

What is a balanced force?

Answer 3

Two or more forces acting in equal magnitudes and opposite directions on an object, the object stays still

Question 4

What is an unbalanced force?

Answer 4

Two or more forces acting in unequal magnitudes and opposite directions, causes motion

Question 5

What is Inertia?

Answer 5

The resistance of any object to a change in its state of motion. Tendency of an object to either continue staying at rest or continue at its current direction and velocity
“More inertia’ll hurtcha”

Question 6

Define speed

Answer 6

The distance traveled over the amount of time taken to cover the distance. Usually measured in meters/second

Question 7

What is Velocity?

Answer 7

The distance traveled over the amount of time taken to cover the distance in a certain direction (distance/time)

Question 8

What is Acceleration?

Answer 8

A change in velocity or direction over time. Measured in Meters/second/second

Question 9

What is the Law of Conversation of Momentum

Answer 9

Momentum is the force of objects in motion; equal to mass x velocity. In the absence of gravity or friction, when two objects collide, all momentum is conserved. Never lost! Only TRANSFERRED

Question 10

State Newtons First Law of Motion

Answer 10

An object at rest will stay at rest unless acted upon by an unbalanced force. An object in motion continues in motion with the same speed and direction unless acted upon by an unbalanced force. Often called “The Law of Inertia”

Question 11

State Newtons Second Law of Motion

Answer 11

Force=Mass x Acceleration
(Acceleration is produced when a force acts on a mass. The greater mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object)) Heavier objects require more force

Question 12

State Newton’s third law of motion

Answer 12

For every action there is an equal and opposite reaction. For every force, there is a reaction force that is equal in size, but opposite in direction.

Question 13

What is force measured in?

Answer 13

Newtons

Question 14

What is Mass measured in?

Answer 14

Kilograms

Question 15

What is acceleration measured in?

Answer 15

Meters per second per second

Question 16

What is the acceleration due to gravity?

Answer 16

9.8m/s/s

Question 17

If the y axis of a graph represents distance and the x axis represents time, what does the slope represent?

Answer 17

Speed

Question 18

What does a flatline on a graph mean?

Answer 18

It means acceleration has stopped

Question 19

What does the triangle symbol mean

Answer 19

it means change

Question 20

What does Vf-V1 divided by the change in velocity over time

Answer 20

Acceleration