# Physics Unit 2 AQA

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• Created by: emily
• Created on: 19-01-10 18:03
• Speed = distance / time

m/s= m/s

• Gradient of a distance time graph- speed= change in distance/ time taken for change

for example 50-0 / 10-0 = 50 / 10 = 5m/s

• Velocity is speed in a given direction
• Acceleration occurs as an object changes velocity
Acceleration= change in velocity / time taken for change
m/s/s= m/s / s
• Understand velocity time graph
area under line is distance traveled
- triangles and rectangles
- triangle = 1/2 x base x height
gradient of the line on a velocity time graph is used for acceleration
• Resultant force is when two objects interact they exert equal and opposite forces on each other.
-All the forces acting on an object can be described be a single force that has the same effect as all the forces acting together.
• Resultant force N = Mass kg x acceleration m/s/s
• Stopping distance = thinking distance + braking distance
• Braking distance can be increased by more mass, speed of…

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