how to do number 1&2? ill give brainliest, also in number 2, you could just show me how to do the first three since i want to know how to solve it! thank you

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.

If forces acting on an object are unbalanced. true or false

What causes the formation of ocean currents?