Physics Paper 1 equations

Question 1

What is the formula for kinetic energy?

Answer 1

E=1/2mv^2

Question 2

What is the formula for gravitational potential energy?

Answer 2

GPE = mgh

Question 3

What is the equation linking power to work done and energy transferred?

Answer 3

power = work done/time = energy transferred/time

Question 4

What is the equation for efficiency?

Answer 4

useful output / total input

Question 5

What is the equation linking current, charge flow and time?

Answer 5

charge flow = current x time

Q = I x t

Question 6

What is the equation linking p.d., resistance and current?

Answer 6

p.d. = current x resistance 
v = I x R

Question 7

How do you work out total resistance?

Answer 7

total resistance = resistance of component 1 + resistance of component 2

Question 8

What is the equation linking current, power and resistance?

Answer 8

power = current^2 x resistance
p = I2 x R

Question 9

What is the equation linking energy transferred, charge flow and p.d.?

Answer 9

energy transferred = charge flow x potential difference.

E = Q x V

Question 10

What is the equation for density?

Answer 10

desnsity = mass/volume

Question 11

What is the equation linking current, power and p.d.?

Answer 11

Power = current x potential difference
p = I x V