Physics equations

Question 1

Equation for distance travelled

Answer 1

Speed x time

Question 2

2 equations for energy transferred

Answer 2

1. Power x time

2. Charge flow x potential difference

Question 3

4 equations for power

Answer 3

1. Work done ➗ time
2. Potential difference ✖️ current
3. Energy transferred ➗ time
4. Current^2 ✖️ Resistance

Question 4

Equation for weight

Answer 4

Mass x gravitational field strength

Question 5

Equation for resultant force

Answer 5

Mass x acceleration

Question 6

Equation for momentum

Answer 6

Mass x velocity

Question 7

Equation for elastic potential energy

Answer 7

1/2 x spring constant x extension^2

Question 8

2 equations for efficiency

Answer 8

1. Useful power output ➗total power output

2. Useful output energy transfer ➗ total input energy transfer

Question 9

Equation for wave speed

Answer 9

Frequency x wavelength

Question 10

Equation for potential difference

Answer 10

Current x resistance

Question 11

Equation for force applied to a spring

Answer 11

Spring constant x extension

Question 12

Equation for density

Answer 12

Mass ➗ volume

Question 13

Equation for kinetic energy

Answer 13

1/2 x mass x speed^2

Question 14

Equation for acceleration

Answer 14

Change in velocity ➗ time taken

Question 15

Equation for charge flow

Answer 15

Current x time

Question 16

Equation for work done

Answer 16

Force x distance

Question 17

Equation for gravitational potential energy

Answer 17

Mass x gravity x height