contestada

A cannonball is shot from a cannon at a launch angle of 63° and an initial velocity
of 147 m/s.The gravitational acceleration is -9.8 m/s2. Assuming NO air
resistance, how long will it take the cannonball to reach the peak of its trajectory?

Respuesta :

Answer:

13.4s

Explanation:

time = usinx/g. (X= angle) , (u = initial velocity)

=( 147×sin63)/9.8

time= 13.4s