P1

Question 1

What is the equation for average speed?

Answer 1

average speed (m/s) = distance moved (m) / time taken (s)

Question 2

What is the equation for acceleration?

Answer 2

acceleration (m/s squared) = change in velocity (m/s) / time taken (s)

Question 3

What is the equation for final speed?

Answer 3

(final velocity)squared = (initial velocity)squared + (2 × acceleration × distance moved)
v squared = u squared + (2 × a × d )

Question 4

What is the difference between a vector and a scalar?

Answer 4

A vector can be measured, and has a magnitude and direction (e.g. force)
A scalar can be measured, and only has magnitude (e.g. speed)

Question 5

What is the equation for force?

Answer 5

Force (N) = mass (kg) × acceleration (m/s squared)

F = m × a

Question 6

What is the equation for weight?

Answer 6

weight (kg) = mass (N) × gravitational strength (N/kg)

W = m × g

Question 7

Distance Time Graphs
What does the gradient represent?
What does a horizontal line represent?
What does a curved line represent?

Answer 7

1) Velocity
2) Stationary
3) Velocity is changing, it is accelerating.

Question 8

Forces 2
What is the force between two surfaces moving past each other?
What is the force acting on you as you move through the air?
What is the force of a fluid on a submerged object?

Answer 8

1) Friction
2) Air resistance
3) Upthrust

Question 9

Velocity time graphs 1
What does the gradient represent?
What does the speed at 0 mean?
What does a horizontal line represent?

Answer 9

1) Acceleration. Negative gradient is deceleration.
2) It is at rest.
3) Constant speed

Question 10

Velocity time graphs 2
What does the area under the line represent?
What does a curved line represent?

Answer 10

1) Distance travelled

2) Acceleration is changing.

Question 11

Forces 1
What is the force that acts at a perpendicular angle?
What is the force acting on a stretched wire?
What is the force acting on mass due to gravity?
What is the force between two poles of a magnet

Answer 11

1) Normal contact
2) Tension
3) Weight
4) Magentic

Question 12

What makes up the stopping distance of a vehicle?

Answer 12

Thinking distance + breaking distance

Question 13

What factors affect the breaking distance?

Answer 13

Weather and road conditions

Vehicle conditions

Question 14

What is the equation for momentum

Answer 14

momentum (kgm/s) = mass (kg) × velocity (m/s)

Question 15

What is the equation for force using momentum

Answer 15

force (N) = change in momentum (kgm/s) / time taken (s)

Question 16

What is the equation for a moment?

Answer 16

moment (Nm) = force (N) × distance from pivot (m)