Topic 2: Motion

Question 1

Average speed formula

Answer 1

V = d/t

Question 2

Speed is the….

Answer 2

distance travelled per fixed time

Question 3

Instantaneous speed

Answer 3

The speed of an object at a set point

Question 4

Instantaneous speed formula

Answer 4

V = d/t

Question 5

Acceleration

Answer 5

Rate of change of velocity

Question 6

Acceleration is measured in

Answer 6

ms-2

Question 7

When the velocity of an object changes…

Answer 7

it accelerates

Question 8

If it is a negative acceleration…

Answer 8

it is a deceleration

Question 9

The distance travelled =

Answer 9

area under speed time graph

Question 10

How do we figure out distance travelled on a acceleration graph?

Answer 10

Using areas of triangles and rectangles

Question 11

Acceleration formula

Answer 11

a = (v-u)/t

Question 12

V is…

Answer 12

final velocity

Question 13

U is…

Answer 13

inital velocity

Question 14

What can a force change?

Answer 14

The shape, speed, and direction of an object

Question 15

Mass

Answer 15

The amount of matter in an object

Question 16

Weight

Answer 16

The force acting on an object due to gravitaional pull

Question 17

Weight formula

Answer 17

W=mg

Question 18

Newton’s first law

Answer 18

An object will remain at rest or continue at constant velocity in a straight line unless acted on by an unbalanced force

Question 19

Free body diagram

Answer 19

A diagram to visualise the applied forces to an object. Requires size and direction to describe it.

Question 20

Newton’s second law

Answer 20

If an unbalanced force, F, (in N, newtons) is applied to a mass, M (in kg, kilograms), it will accelerate at an acceleration of a (in ms-2) meters per second per second.

Question 21

Force formula

Answer 21

F=ma

Question 22

Newton’s third law

Answer 22

For every action force, there is an equal and opposite reaction force. If A exerts a face on B. B exerts on equal and opposite force on A.