physics equations

Question 1

average speed, distance, time taken.

Answer 1

distance = average speed x time taken

Question 2

acceleration, mass, force.

Answer 2

force = mass x acceleration

Question 3

sin c, 1, n.

Answer 3

sin c = 1 / n

Question 4

pressure, area, force.

Answer 4

pressure = force / area

Question 5

momentum, velocity, mass.

Answer 5

momentum = mass x volume

Question 6

mass, volume, density.

Answer 6

density = mass / volume

Question 7

time taken, change in velocity, acceleration.

Answer 7

acceleration = change in velocity/ time taken

Question 8

force, work done, distance moved.

Answer 8

work done = force x distance moved

Question 9

energy transferred, work done.

Answer 9

energy transferred = work done

Question 10

mass, g, height, gravitational potential energy.

Answer 10

gravitational potential energy = mass x g x height

Question 11

1/2, kinetic energy, (speed)^2, mass.

Answer 11

kinetic energy = 1/2 x mass x (speed)^2

Question 12

mass, weight, gravitational field strength.

Answer 12

weight = mass x gravitation field strength

Question 13

force, moment, perpendicular distance from the pivot.

Answer 13

moment = force x perpendicular distance from the pivot.

Question 14

current, charge, time.

Answer 14

charge = current x time

Question 15

current, voltage, resistance

Answer 15

voltage = current x resistance

Question 16

voltage, electrical power, current.

Answer 16

electrical power = voltage x current

Question 17

frequency, wavelength, wave speed.

Answer 17

wave speed = frequency x wavelength

Question 18

input (primary) voltage, primary turns,

output (secondary) voltage, secondary turns.

Answer 18

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

Question 19

sin i, sin r, n.

Answer 19

n = sin i / sin r

Question 20

efficiency, 100%, useful energy output, total energy output.

Answer 20

efficiency = (useful energy output / total energy output) x 100

Question 21

Vp, Vs, Is, Ip.

Answer 21

Vp x Ip = Vs x Is (for 100% efficiency)

Question 22

height, density, pressure, gravitational field strength.

Answer 22

pressure = height x density x gravitational field strength