Question

A projectile of mass 0.607 kg is shot straight up with an initial speed of 20.1 m/s. (a) How high would it go if there were no air resistance?

Answer 1

Answer:

20.6m

Explanation:

The mass is useless in this case.  

Kinetic Energy = Potential Energy

g is acceleration due to gravity.

(1/2)mv² = mgh (m's drop out)

(1/2)v² = gh

(1/2)(20.1²) = 9.81(h)

h = (20.1 x 20.1)/9.81 x 2

20.61 meters