I'm in 7th grade and i need with 1.04 law of conservation of energy can someone me today

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

How will the system respond to a temperature increase?