level: equations
Questions and Answers List
level questions: equations
| Question | Answer |
|---|---|
| weight (N)=? | mass(kg) x gfs(N/Kg) |
| if question in grams what do you do to get it to kg | divide by 1000 |
| work done(J) =? | force x distance |
| what is work done | the amount of energy transferred for an object to move a certain distance |
| elastic protentional= ? | 0.5 x spring constant x extension^2 |
| force in a spring=? | force (n)= spring constant(n/m) x extension(m) |
| energy stored in spring=? | 0.5 x spring constant x extension^2 |
| speed= | distance (m) / time (s) |
| difference between speed and velocity | speed is how fast an object is moving, while velocity is how fast in a certain direction. |
| how to calculate acceleration(m/s^2) when given the time | change in velocity(m/s)/ time(s) |
| acceleration when not given time | (final velocity^2 (m/s) - initial velocity^2) = 2 x acceleration x distance |
| momentum= | mass x velocity |
| what is momentum | momentum is a measure of how difficult it is to stop a moving object |
| how can 2 boys the same size and speed have different momentums when moving in different directions. | different directions = different velocity = different momentum |
| gpe= | mass x gfs x height |
| force= | mass x accceleration |