Question

A 0.55 kg projectile is launched from the edge of a cliff with an initial kinetic energy of 1550 J and at its highest point is 140 m above the launch point. (a) Calculate the horizontal component of its velocity. (b) Calculate the vertical component of its velocity just after launch. (c) At one instant during its flight the vertical component of its velocity is found to be 65 m/s. At that time, how far is it above or below the launch point

Answer 1

a). 53.78 m/s

b) 52.38 m/s

c) -75.58 m

Step-by-step explanation:

See attachment for calculation

In the c part, The negative distance is telling us that the project went below the lunch point.