paper 2: quantities & calculations

Question 1

State the units for the following:

1) Weight
2) Mass
3) Force
4) Distance

Answer 1

1) Newtons N
2) Kilograms Kg
3) Newton N
4) Meters m

Question 2

State the units for the following:

1) Extension
2) Speed
3) Time
4) Acceleration

Answer 2

1) Meters m
2) Meters per second m/s
3) seconds s
4) Meters per second squared m/s²

Question 3

State the units for the following:

1) Change in velocity
2) Momentum
3) Wave speed
4) Wavelength
5) Frequency

Answer 3

1) Meters per second squared m/s²
2) Kilograms meters per second kg⋅m/s
3) Minutes per second m/s
4) Meter m
5) Frequency Hz

Question 4

Weight equation:

Answer 4

Weight = mass x volume

Question 5

Work done equation:

Answer 5

work done = force x distance (along the line of action of the force)

Question 6

force applied to a spring equation:

Answer 6

force applied to a spring = spring constant x extension

Question 7

Distance travelled equation:

Answer 7

distance travelled = speed x time

Question 8

acceleration equation:

Answer 8

acceleration = change in velocity / time taken

Question 9

Resultant force equation:

Answer 9

resultant force = mass x acceleration

Question 10

momentum force equation:

Answer 10

momentum force = mass x velocity

Question 11

wave speed equation:

Answer 11

wave speed = frequency x velocity