Equations

Question 1

Weight equation:

Answer 1

Weight= mass x gravitational field strength

Question 2

Work done equation:

Answer 2

Work done= force x distance

Question 3

Force applied to a spring:

Answer 3

Force applied to a spring= spring constant x extension

Question 4

Distance travelled equation:

Answer 4

Distance travelled: Speed x time

Question 5

Acceleration equation:

Answer 5

Acceleration= change in velocity over time taken

Question 6

Resultant force equation:

Answer 6

Resultant force= mass x acceleration

Question 7

Momentum equation:

Answer 7

Momentum= mass x velocity

Question 8

Kinetic energy equation:

Answer 8

Kinetic energy= 0.5 x mass x speed squared

Question 9

Gravitational potential energy equation:

Answer 9

Gravitational potential energy= mass x gravitational field strength x height

Question 10

Power equation 1:

Answer 10

Power = energy transferred over time

Question 11

Power equation 2:

Answer 11

Power= work done over time

Question 12

Wave speed equation:

Answer 12

Wave speed= frequency x wavelength

Question 13

Efficiency equation:

Answer 13

Efficiency= useful power output over total power input