Motion And Force

Question 0

Speed

Answer 0

How fast

Question 1

Relative motion

Answer 1

How observer sees your motion depends on his motion

Question 2

Velocity

Answer 2

Speed and direction

Question 3

Acceleration

Answer 3

Change in velocity

Question 4

Formula for acceleration

Unit

Answer 4

Final velocity-Initial velocity/time

m/s2

Question 5

Vector, example

Answer 5

Size and direction, force

Question 6

Formula for force

Unit

Answer 6

F=MA

Kg x m/s2 (in this case, N)

Question 7

Sir Isaac Newton, book

Answer 7

Explained laws of motion, book= Principia

Question 8

1st law

Answer 8

Inertia, an object stays in motion if no force works on it

Question 9

2nd law

Answer 9

Acceleration increases with more force but decreases with more mass

Question 10

3rd law

Answer 10

If an object exerts a force on another object, the other object exerts the same force back.
Action/reaction

Question 11

Centripetal force, formula

Answer 11

Keeps an object moving in a circle

Mass x acceleration

Question 12

Momentum
Formula
Unit

Answer 12

Measure of mass in motion
P=mv
Kg x m/s

Question 13

Conservation of momentum

Example

Answer 13

Total momentum of object does not change if no other force works on it
Newton balls

Question 14

Gravity

Formula

Answer 14

Force that attracts objects due to their masses

F=mg

Question 15

Terminal velocity

Answer 15

Fasted an object falls

Question 16

How to get weight

Answer 16

Mass x 9.8m/s2

Question 17

Friction

Two factors that can change it

Answer 17

Force that opposes motion between two surfaces that are touching
Roughness/force

Question 18

Free fall

Formula(solving for velocity)

Answer 18

Falling when only force is gravity

Velocity=9.8m/s2 x time