Physics newton
posted by harry .
A rocket weighs 1 x10^7 N while on the surface of the earth. The ignition of its engines results in a lift off force of 1.5 X 10^7 N
a) what is the mass of the rocket.
b) what is its acceleration at lift off
c)How fast will it be moving if it acceleartion at this rates for 10 minutes.
d) How high will it be after 10 minutes.
1 the weight is mg, solve for m
2 Lift off force=mg + ma solve for a
vf=at change t to seconds
h=1/2 a t^2
The reality is that the weight of the rocket decreases as fuel is burned. I suppose your teacher wants to ignore that.
Thank you Mr Bob Pursley
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