At what angle did a cannonball leave the cannon, if it had a range of 30 at a speed of 17m/s^2?

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

object 2 because all the other ones are wrong