posted by javane .
Rocket-powered sleds are used to test the responses of humans to acceleration. Starting from rest, one sled can reach a speed of 444 m/s in 1.80 s and can be brought to a stop again in 2.15 s.
(b) Find the acceleration of the sled as it is braking and compare it to the magnitude of the acceleration due to gravity.
2Your answer is incorrect.g
a = (V2-V1)/t = (0 -444)/2.15
= - 207 m/s^2
207/9.8 = 21 times magnitude of gravity