Physics Question? please help!!?

Posted on 2016-03-22 14:28:00 in Physics by AMAR

A 1500 kg rocket lifts off the surface of the moon by expelling exhaust. The force applied to the exhaust gas is 15000N downwards. (no air resistance because lifting from moon) gravitational accel=1.6 m/s^2 answer the following. 

1. What is the size of the upward force acting on rocket due to exhaust gas? 

2. What is the net force acting on rocket? 

3. What is total acceleration of rocket )magnitude and direction)? 

4. What is velocity of rocket after 4 seconds mag and direction?

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