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# Acceleration of rocket sled

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1) A rocket sled running on a straight level track has been used to study the physiological effects of large accelerations on astronauts. One such sled can attain a speed of 408m/sec in 1.6sec. starting from rest.

a) What is the acceleration of the sled, assuming it is constant? Answer in m/s^2.

b) How many g's would you pull? That is, what factor times g=9.80m/s^2 is this?

c) How far does the sled travel in 1.6sec, starting from rest? Answer in meters.

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#### Solution Preview

Please see the attached file.

SOLUTION

a) The sled can attain a speed of 408 m/s in 1.6 sec..

Initial velocity = 0
Final velocity = 408 m/s
Time taken = 1.6 sec

Change in velocity = 408 m/s

Acceleration is defined as the change in velocity in 1 sec. (rate of change of velocity).
Now, change of 408 m/s in velocity takes place ...

#### Solution Summary

The problem has been solved using kinematics equations.

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