Motion

Question 0

Velocity and acceleration

• vector/scalar (what are they)
• displacement?
• acceleration equation and def?
• deceleration?

Answer 0

Velocity= speed in a direction
Vector(magnitude and physical quantity that has direction)
Scalar(only magnitude- no direction)
Acc = change of v per second 
= v-u/time (final-initial v)
Deceleration/ negative acceleration

Question 1

Distance-time graphs

• line=horizontal
• line= straight line going up
• gradient of a line….
• speed equation

Answer 1

• stationary object
• moving at a constant speed
• speed= distance/time (m/s)

Question 2

On a velocity time graph

• line= horizontal
• gradient= ….?
• area under the line=..?

Answer 2

• horizontal= acceleration is zero
• gradient= represents acceleration
• area under the line = distance travels
(Can calculate using normal area equation)

Question 3

Tangents!!!!

To find speed with distance-time graphs
• equation???

Answer 3

• height/base from the triangle drawn under the sloping line

Question 4

In circular motion

Answer 4

Velocity is constantly changing because direction is constantly changing!!