A car is moving at 20 m/s [N] when it constantly accelerates to a final velocity of 10 m/s [E]. The magnitude of its displacement during this time is 1.50 X 10^2 m.
How long did the acceleration last?
2006-09-14 11:57:03 · 3 answers · asked by eweng9246 2 in Science & Mathematics ➔ Physics
The formula you need to use for this problem is V^2 = V0^2 + 2ax, where V is the final velocity, V0 is the initial velocity, a is the acceleration, and x is the displacement. You have everything but the acceleration, so you can solve for it. Once you know the acceleration, you simply need to divide the change in velocity by the acceleration to get the elapsed time.
2006-09-14 12:00:49 · answer #1 · answered by DavidK93 7 · 0⤊ 1⤋
If the car is moving initially at 20m/s and has a final velocity of 10m/s there is no acceleration, however there is deceleration.
So in answer to the question there was no exceleration.
2006-09-14 19:10:29 · answer #2 · answered by whiskercreek 2 · 0⤊ 1⤋
Both DavidK93 and whiskercr... ignore the change in direction. Unfortunately, I only know formulas for straight line motion.
2006-09-14 20:26:56 · answer #3 · answered by STEVEN F 7 · 0⤊ 0⤋