You push a lawnmower handle at an angle of 45.0° below the horizontal with 45.0 Newtons of force. The lawnmower has a mass of 15.0 kg. What is the mower’s acceleration?  
A. 

4.24 m/s2

B. 

2.12 m/s2

C. 

135 m/s2

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s. when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?

2) why do satelites not fall while revolving around the earth?