Physics calculations

Question 1

Weight calculation

Answer 1

Weight = mass (kg) ✖️ gravitational field strength (N/kg)

Question 2

Gravitational field strength

Answer 2

Weight/mass = gravitational field strength

Question 3

Mass (weight + gfs)

Answer 3

Mass= weight divided by gravitational field strength

Question 4

Work done

Answer 4

Work done= force ✖️distance

Question 5

Distance

Answer 5

Distance = work done divided by force

Question 6

Force

Answer 6

Force = work done divided by distance

Question 7

Gravitational potential energy

Answer 7

GPE ( delta E) = mass (m) (9.8 on earth) ✖️ gravitational field strength (g)✖️change in height (delta H)

Question 8

Change in height

Answer 8

Change in height= change in GPE/ mass x gravitational field strength

Question 9

Mass (gpe, gfs, change in height)

Answer 9

Mass= change in GPE/gravitational field strength x change in height

Question 10

Kinetic energy

Answer 10

Kinetic energy = 1/2 x mass x velocity squared

Question 11

Velocity

Answer 11

KE
———— = velocity squared
(0.5 x m)

Question 12

Mass (ke)

Answer 12

Mass = KE
————- ———
(0.5 x v squared)

Question 13

Energy

Answer 13

Energy = 0.5 x mass x velocity squared

Question 14

Voltage

Answer 14

Voltage (v) = amps (I) x resistance (r)

Question 15

Charge

Answer 15

Charge (Q) = current (I) x time (t)