Kinematics

Question 1

Distance

Answer 1

the total length between two points

Question 2

Speed

Answer 2

the total distance travelled per unit of time

Question 3

Displacement

Answer 3

the distance of an object from a fixed point in a specified direction

Question 4

Velocity

Answer 4

the rate of change of displacement of an object

Question 5

Acceleration

Answer 5

the rate of change of velocity of an object

Question 6

Equation for velocity

Answer 6

Velocity = △s/△t

Question 7

Equation for acceleration

Answer 7

Acceleration = △v/△t

Question 8

Constant velocity in:
- d-t graph
- v-t graph
- a-t graph

Question 9

Velocity increasing at a constant rate in:
- d-t graph
- v-t graph
- a-t graph

Question 10

Velocity increasing, acceleration increasing at a constant rate in:
- d-t graph
- v-t graph
- a-t graph

Question 11

What is the area under v-t graph

Answer 11

displacement

Question 12

Gradient of the slope of a d-t graph is…

Answer 12

Answer: Velocity

Displacement-time graphs show the changing position of an object in motion

They also show whether an object is moving forwards (positive displacement) or backwards (negative displacement)

A negative gradient = a negative velocity (the object is moving backwards)

The gradient (slope) of a displacement-time graph is equal to velocity

The greater the slope, the greater the velocity

Question 13

Equation of acceleration

Answer 13

a = v - u / t

Question 14

Gradient of a v-t graph is…

Answer 14

acceleration

Question 15

What are the 4 kinematics equations of motion

Answer 15

v = u + at
s = ut + ½at^2
v^2 = u^2 + 2as
v = (v + u) / 2