Forces

Question 1

How is speed different to velocity?

Answer 1

Speed:
- Is a scalar quantity
- Scalar quantities only have a magnitude (size)
- No direction

Velocity:
- Describes an object’s speed and direction
- Is a vector quantity because of its magnitude and direction

Question 2

Equation for average speed

Answer 2

Average speed = distance / time

S = d / t

Question 3

What is the typical walking speed?

Answer 3

1.4 m/s

Question 4

What is the typical running speed?

Answer 4

3.3m/s

Question 5

What is the typical speed of a bus?

Answer 5

10m/s

Question 6

What is the typical speed of a car on the motorway?

Answer 6

31m/s

Question 7

What is the typical speed of wind?

Answer 7

6m/s

Question 8

What is the typical speed of sound?

Answer 8

330m/s

Question 9

Equation for acceleration?

Answer 9

Acceleration = change in velocity / time taken

Question 10

What is the difference between distance and displacement?

Answer 10

Distance:
- How far an object moves
- Is a scalar quantity

Displacement:
- Is the distance an object moves in a straight line from the starting point to a finishing point.
- Is a vector quantity.

Question 11

What is a force?

Answer 11

A force is a push or pull any that acts on an object when it interacts with another object.