a car has an acceleration of 20m/s^2. How long will it take to increase it's speed by 20m/s?
2007-10-17 01:51:09 · 4 answers · asked by Vicky G 2 in Science & Mathematics ➔ Mathematics
t = (v-vo)/a
Note (v- vo) is the change in velocity, which in your case is 20 m/s and a is acceleration. So:
= 20/20
=1 second
2007-10-17 01:56:16 · answer #1 · answered by remowlms 7 · 0⤊ 0⤋
1 second
heres why. im gonna write it out, cuz its easier than the math. assuming you start at 0 m/s. you accelerate at 20m/s^2. subsititute (1) for (s) and you will see that the you get 20m/s after 1 second.
2007-10-17 08:54:53 · answer #2 · answered by Anonymous · 0⤊ 0⤋
1 second. the acceleration is therate at which its speed increases. 20m/s^2 means that every second the sped increases 20m/s
2007-10-17 08:56:00 · answer #3 · answered by maussy 7 · 0⤊ 0⤋
a = 20m/s^2
s = 20 m/s
t= ?
(a) t = 20m/s
(20m /s^2) t = 20m/s
t = 1s
2007-10-17 08:56:30 · answer #4 · answered by zey 2 · 0⤊ 0⤋