What is its speed after it accelerates for 31s

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A rocket accelerates from rest at a rate of 46 m/s2.

(a) What is its speed after it accelerates for 31 s? 

(b) How long does it take for the rocket to reach a speed of 7,700 m/s? Initially stationary, a train has a constant acceleration of 0.6 m/s2.

(a) What is its speed after 34 s? 

(b) What is the total time required for the train to reach a speed of 41 m/s?

Reference no: EM132521887

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