Energy stores, transfers and formulae

Question 1

What does GPE stand for?

Answer 1

Gravitational potential energy

Question 2

What does M stand for on the GPE triangle?

Answer 2

Mass

Question 3

What does the g stand for on the GPE triangle?

Answer 3

Gravity

Question 4

What does h stand for on the GPE triangle?

Answer 4

Height

Question 5

What is the equation for GPE

Answer 5

M x g x h

Question 6

How do you calculate weight

Answer 6

M x g

Question 7

What does FIFA stand for?

Answer 7

Formula (write out the equation)

Insert (insert the values you know)

Fine tune (correct the units)

Answer (calculate the unit, don’t forget the units)

Question 8

How do you calculate work done and energy transferred?

Answer 8

Work done = Force (N) x distance moved (M)

Question 9

How do you calculate kinetic energy?

Answer 9

Kinetic energy = mass x 0.5 x velocity x velocity

Question 10

How do you calculate elastic potential energy?

Answer 10

Elastic potential energy = 0.5 x spring constant (N/m) x extension of object (M) x extension of object (M)

Question 11

How do you calculate efficiency?

Answer 11

Efficiency (% or decimal) = useful energy output ( J) ➗ total energy input ( J) x 100

Question 12

How do you calculate power?

Answer 12

Power (watts) = energy ( J) ➗ time (s)