SP1

Question 1

What is the difference between a scalar and vector quantity?

Answer 1

Scalar: Only magnitude (e.g., speed = 5 m/s)
Vector: Magnitude + direction (e.g., velocity = 5 m/s north)

Question 2

Give 3 examples of vector quantities

Answer 2

Velocity, force, acceleration

Question 3

What does a horizontal line show on a distance-time graph?

Answer 3

The object is stationary (not moving)

Question 4

How do you calculate speed from the graph?

Answer 4

Speed = gradient = change in distance ÷ change in time

Question 5

What is the formula for acceleration?

Answer 5

Acceleration (a) = change in velocity (Δv) ÷ time (t)
Units: m/s²

Question 6

A car accelerates from 10 m/s to 30 m/s in 5 seconds. Calculate acceleration.

Answer 6

a = (30-10)/5 = 4 m/s²

Question 7

What does the gradient represent?

Answer 7

Acceleration (change in velocity over time)

Question 8

What does the area under the graph represent?

Answer 8

Distance travelled

Question 9

What does a horizontal line show?

Answer 9

Constant velocity (no acceleration)

Question 10

Distance =

Answer 10

Area under velocity-time graph