Unit V - Force & Motion

Question 1

Acceleration

Answer 1

the change in speed of an object in a given time

Question 2

Action

Answer 2

the force one object applies to a second (as in Newton’s third law of motion)

Question 3

Balanced forces

Answer 3

forces that cancel each other out when acting on an object together

Question 4

Center of mass

Answer 4

the point where the distribution of an object’s mass is centered

Question 5

Collision

Answer 5

when two or more objects crash into one another

Question 6

Deceleration

Answer 6

negative acceleration (slowing motion)

Question 7

Force

Answer 7

a push or pull of one object on another which can change the motion of that object

Question 8

Friction

Answer 8

the force that resists the motion of one object over another

Question 9

Gravity

Answer 9

the force that causes two masses to be attracted to one another

Question 10

Gravity

Answer 10

the force that causes two masses to be attracted to one another

Question 11

Inertia

Answer 11

the tendency of an object to remain in its state of motion or rest unless acted on by an outside force

Question 12

Matter

Answer 12

the amount of matter in an object

Question 13

Motion

Answer 13

the change in position, direction, or speed of an object with respect to a reference point

Question 14

Net force

Answer 14

the total combined force acting on an object

Question 15

Position

Answer 15

an object’s location

Question 16

Reaction

Answer 16

the force with which an object responds to an action (as in Newton’s third law of motion)

Question 17

Speed

Answer 17

the rate at which an object moves a certain distance in a given time

Question 18

Unbalanced forces

Answer 18

forces that do not cancel each other out when acting on an object together

Question 19

Weight

Answer 19

the amount of force that gravity has on an object’s mass

Question 20

How do you calculate the speed of an object in motion?

Answer 20

Find the unit rate for each slope, divide by how many groups there are.

Question 21

Formula for acceleration

Answer 21

acceleration = final speed - inital speed / time

Question 22

Newton’s First Law

Answer 22

An object in motion will stay in motion and an object at rest will stay at rest unless an opposing force acts on it

Question 23

Newton’s Second Law

Answer 23

F = MA

Question 24

Newton’s Third Law

Answer 24

For every action, there is an equal (in size) and opposite (in direction) reaction force

Question 25

Example of Newton’s Third Law

Answer 25

When a person is jumping, the person uses his legs to jump, whereas the floor is pushing the guy off.

Question 26

Example of Newton’s First Law

Answer 26

When an clip is above an index card which is above a cup and the index card is rapidly taken away, gravity pulls the clip down causing it to fall.