A cannon shoots a ball at 50 m/s at an angle of 53.13°. Ignore the original height of the cannon and assume level ground. a. How long is the cannon ball in the air? b. How far does the cannon ball travel? c. What is the maximum height of the cannon ball?

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.]