Motion

Question 1

Define what scalar is and give an example.

Answer 1

Scalar is a quantity which has size (magnitude)

e.g. Mass, temperature

Question 2

Define what vector is and give an example.

Answer 2

Vector is a quantity which has size and direction

e.g. Force, acceleration

Question 3

Give a summary of distance, speed, rate of change of speed (scalar)

Answer 3

Distance: How far an object has travelled

Speed: Rate of change of distance

speed = distance over time
initial speed + final speed divided by 2

Rate of change of speed
= final speed-initial speed divided by time.

Question 4

Give a summary of displacement, velocity and acceleration (vector)

Answer 4

Displacement: How far an object has travelled in a certain direction

Velocity: Rate of change of displacement
=displacement over time
=initial velocity + final velocity divided by 2

Acceleration: final velocity-initial velocity over time.

Question 5

Slope of distance-time graph

Answer 5

Speed

Question 6

Speed-time graph

Answer 6

Rate of change of speed

Question 7

Under speed-time graph

Answer 7

Distance moved

Question 8

Slope of displacement-time graph

Answer 8

Velocity

Question 9

Slope of velocity-time graph

Answer 9

Acceleration

Question 10

Area under velocity-time graph

Answer 10

Displacement