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May 28, 2015

Homework Help: physics

Posted by Anonymous on Tuesday, September 21, 2010 at 10:21pm.

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.
(a) Calculate the acceleration of the sled when starting, and compare it to the magnitude of the acceleration due to gravity, 9.80 m/s2.
(b) Find the acceleration of the sled as it is braking and compare it to the magnitude of the acceleration due to gravity.

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