C7 ON THE MOVE

Question 1

How would you work out the speed of an object on a distance-time graph? (1)

Answer 1

⇒ (Distance traveled÷time taken) ⇔ Δs/Δt ⇔ Δy/Δx ⇔ The gradient of the line (1)

Question 2

Formula for acceleration (a)?

Answer 2

⇒ a = v-u/t ⇔ Δv/t (1)

Question 3

What is the average velocity of an object? (1)

Answer 3

⇒ Displacement / time (1)

Question 4

How do you work out the instantaneous velocity of an object on a displacement time graph? (2)

Answer 4

⇒ Draw a tangent to the curve (1)

⇒ Δy/Δx (1)

Question 5

How do you work out the displacement/distance on a velocity-time graph? (2)

Answer 5

⇒ The area under the graph (1)

⇒ S = ((1/2)(u+v)) x t (1)