Everything on this page is solved with the SAME formula !
Distance = (speed) x (time) .
Before I get into how to solve each problem, we need to notice that this whole sheet deals with speed, NOT velocity.
'Velocity' is speed AND THE DIRECTION OF THE MOTION. Nothing on this page ever mentions direction, so there's no velocity anywhere on the page.
Your teacher may not be happy if you talk about this on your homework, but that's too bad. Just don't say "velocity" in any of your answers. Say "speed", and if the teacher complains about that, then it's time to let the teacher have it with both barrels.
1). Speed = (distance covered) / (time to cover the distance)
2). Speed = (distance covered) / (time to cover the distance)
3). Distance = (average speed of travel) x (time traveling at that speed)
4). Time to cover the distance = (distance) / (speed)
5). Car's speed = (distance the car covered) / (time the car took) Sprinter speed = (distance the sprinter covered) / (time the sprinter took)
Calculate the car's speed. Calculate the sprinter's speed.
... Look at the two speeds. Decide which one is faster.
... Subtract the slower one from the faster one. The difference is the answer to "by how much?" .
6). Distance = (speed) x (time spent moving at that speed)
7). Average speed = (TOTAL distance covered) divided by (time to cover the TOTAL distance).
The first law of thermodynamics doesn't actually specify that matter can neither be created nor destroyed, but instead that the total amount of energy in a closed system cannot be created nor destroyed (though it can be changed from one form to another).
