Speed, velocity and acceleration 0.0 / 5 ? PhysicsSpeed, Velocity and AccelerationGCSEEdexcel Created by: Elzito23Created on: 15-04-16 12:00 A man runs after a bus.The bus is travelling at an average speed of 5m/s.The man runs 25m in 6 s.Does he catch the bus? The man’s average speed is 25 ÷ 6 = 4.2 m/s.So he will not catch a bus moving at 5m/s. 1 of 10 What is the formula for average speed? The formula for average speed is distance moved ÷ time taken. The units are metres per second. 2 of 10 What are the units for mass? The units for mass are kilograms. 3 of 10 What does a steep line correspond to in a distance-time graph? The vertical axis in a distance-time graph is the distance travelled from the start. 4 of 10 How is velocity different from speed? Velocity is speed in a given direction. 5 of 10 What is the formula for acceleration? Change in velocity ÷ time taken 6 of 10 What is the vertical axis in a speed-time graph? The vertical axis in a speed-time graph is the velocity of the object. 7 of 10 What does a downwards line correspond to in a speed-time graph? Constant deceleration. 8 of 10 What does the area beneath a velocity-time graph represent? The distance travelled. 9 of 10 If a car increases in velocity from +5 m/s to +15 m/s in three seconds,what is its acceleration? The formula for acceleration is change in velocity ÷ time taken. So 10 m/s divided by 3 s is +3.3 m/s2. 10 of 10
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