all equations needed

Question 1

speed, distance and time

Answer 1

speed = distance/time

Question 2

force, mass and acceleration

Answer 2

force= mass x acceleration

Question 3

acceleration

Answer 3

acceleration= change in velocity/time taken

Question 4

density, mass and volume

Answer 4

density= mass/volume

Question 5

force, distance and work

Answer 5

work done= force x distance moved in direction o force

Question 6

the energy realtionships

Answer 6

energy transferred = work done
kinetic energy = 1/2 x mass x (speed squared)
gravitational potential energy (g.p.e) = mass x g x height

Question 7

mass, weight and gravitational field strength

Answer 7

weight = mass x gravitational field strength

Question 8

pressure, force and area

Answer 8

pressure=n force/area

Question 9

moments, force, and distance from pivot

Answer 9

moment= force x perpendicular distance from the pivot

Question 10

charge, current, voltage, resistance and

electrical power

Answer 10

charge = current × time
voltage = current × resistance
electrical power = voltage × current

Question 11

speed frequency and wave length

Answer 11

wave speed = frequency x wavelength

Question 12

magnetism transformers

Answer 12

input (primary) voltage
output (secondary)voltage = primary turns
secondary turns

Question 13

effieciency

Answer 13

useful energy output/total energy output (x100)

Question 14

pressure difference

Answer 14

height x distance x gravity(10)

Question 15

input and output power

Answer 15

input