Wednesday
March 29, 2017

Post a New Question

Posted by on .

A cannon is fired from a cliff top 15m high and at 30 degrees. It takes 3 seconds for canon to reach the earth, what is the initial velocity of the cannon

  • Projectile motion - ,

    h = (Vo*sin(-30))*(t) + 0.5g*t^2=15 m.
    (Vo*sin(-30))*(3) + 4.9*3^2 = 15
    -1.5Vo + 44.1 = 15
    -1.5Vo = 15-44.1 = -29.1
    Vo = 19.4 m/s.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question