If i throw up an object up at 31 m/s, how long will it take to get to its highest point

Which of the following are appropriate acceleration units?

Estimate the kinetic energy of the neptune with respect to the sun as the sum of the terms, that due to its daily rotation about its axis, and that due to its yearly revolution about the sun. [assume the neptune is a uniform sphere with mass = 1.0×1026 kg , radius = 2.5×1010 m , rotation period 16.1 h , orbital period 6.01×104 d and is 4.6×109 km from the sun.]

The applied force of 3 washers will increase the applied force on the car to n.