Section 1 - Motion

Question 1

Physical quantity can be split into two groups, what are these groups?

Answer 1

Vector and Scalar

Question 2

What two things do Scalar’s require to be defined?

Answer 2

Magnitude and Unit

Question 3

What three things do Vector require to be defined?

Answer 3

Magnitude, Unit and Direction

Question 4

What are examples of Scalar?

Answer 4

Quantity:Time, Mass,Temperature,Distance,Speed,Charge,Energy, Power
Unit: s, Kg, K or C, M, M/s, C, J, W

Question 5

What are examples of Vectors?

Answer 5

Quantity:Displacement,Velocity,Acceleration,Force,Momentum, Electric current
Unit: m, M/s, M/s2, N, Kg m/s, A
Direction: e.g. North, South, West , East

Question 6

The gradient in a speed time graph tells you what?

Answer 6

The rate of change of speed

Question 7

The gradient of a displacement time graph tells you what?

Answer 7

The velocity

Question 8

The gradient of a distance time graph tells you what?

Answer 8

The gradient of a distance time graph tells you the speed

Question 9

The gradient of a velocity time graph tells you what?

Answer 9

Acceleration

Question 10

The area underneath a velocity time graph tells you what?

Answer 10

The displacement

Question 11

What is the calculation for speed?

Answer 11

S= D/T

Question 12

What is the calculation for distance?

Answer 12

D= T x S

Question 13

What is the calculation for time?

Answer 13

T = D / S

Question 14

What is the calculation for average speed?

Answer 14

Sav=t.d/t. OR. Sav=(u+v)/2. (U=initial speed & V=final speed)

Question 15

What is the calculation for rate of change of speed?

Answer 15

ΔS=(V-U)/T. (Δ= ‘Delta’ meaning change)

Question 16

What is the calculation for average velocity?

Answer 16

V= ΔS/T. (Δ is rate of change)

OR. Vav=(U+V)/2

Question 17

What is the calculation for acceleration?

Answer 17

A= ΔV/t. (ΔV= V-U)