Physics MCAS Formula Sheet

So what do these equations mean? It is a great idea to become familiar with the formula sheet and what formulas are given because if you don't know a formula you might lose points on very simple quetions. I used * for multiplication so you won't get confused with the variable x.

Starting from the left going down:

1)Average speed (so no direction)= distance/ change in time

The triangle infront of the t is delta which means change. Change in time means the final time minus the initial time.

2) Average acceleration= change in velocity/ change in time

To find change in velocity do final velocity minus the initial velocity.

3) Average velocity (speed with direction) = change in x / change in time

To find change in x(which is a distance with a direction) take the final and minus the initial.

4) the final velocity= initial velocity + (acceleration * change in time)

Multiply acceleration and change in time before you add the initial velocity! (order of operations: PEMDAS)

5) change in x= (initial velocty * change in time) + (1/2 acceleration * change in time squared)

6) final velocity squared= intial velocity squared + (2 acceleration * change in x)

7) average velocity= (initial velocity+ final velocity)/ 2

8) Force= mass * acceleration

9) Force= Gravitational constant * (the first mass * the second mass)/ the distance squared

10) Force= the constant k *( the first charge * the second charge)/ the distance squared

11) Kinetic Energy= 1/2 mass* velocity squared

12) Potential Energy= mass * gravity * change in height

To find change in heigh take the final height and subtract the initial height

13) Work= Force *distance

14) Power= work/ change in time

15) momentum= mass*velocity

16) Voltage= current * resistance (this is called Ohm's Law)

17) Power= current * voltage

18) Energy transferred = mass* specific heat capacity * change in temperature

To find change in temperature take the final minus the initial

19) velocity= frequency * wavelength

20) Period= 1/frequency

Period is measured in seconds

#mcas