How long does the rocket fire in time...I assume the entire trip.
F=ma a=4.7/2.4
time to get to the edge:
4.8=1/2 a t^2
t= sqrt 9.6*2.4/4.7 = 2.21sec
time to drop:
t=sqrt(1/2 g *3)=3.83 sec
Velocity at edge= sqrt(2.21*4.7/2.4)=2.08m/s
distancefrom table= vi*t+1/2 at^2
where t is the time to drop
= 2.08*3.83+1/2*4.7/2.4*3.83^2
and you can compute that, check it all.
A rocket-powered hockey puck has a thrust of 4.70 N and a total mass of 2.40 kg. It is released from rest on a frictionless table, 4.80 m from the edge of a 3.00 m drop. The front of the rocket is pointed directly toward the edge.
How far does the puck land from the base of the table?
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1 answer