Question

30 POINTS
A cannonball is shot from a cannon at a launch angle of 63o 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?

Question 5 options:

9.8 s


13.4 s


40.2 s


26.7 s

Answer 1

Answer:

13.4s

Explanation:

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

= (147×sin63)/9.8

=13.4