Asked by bob

a 25000000 gr rocket is propelled from rest by an engine that produces a 312500 kgm/s2 for 1.375s
A) What is the sleds acceleration?
B) What is the velocity after 1.375s?

Answers

Answered by drwls
A) a = F/m = 312,500/25,000 kg = 12.5 m/s^2

That is not very much acceleration for a rocket sled. Are you sure the mass is that high? That is a lot of zeroes.

B) If the acceleration, a, is constant (which it may not be since propellant is lost and mass decreases), then use
v = a t
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