Homework Statement
A cricket ball is thrown upwards at an angle of 45 degrees and pitches 20m from the thrower. What was the balls initial speed and how high does it rise?
Homework Equations
The Attempt at a Solution
Initial Speed- 19.7 m/s
Height- 10(??) m
I'd like to know why
t= v - u/a
will not get me a correct value for t when v= final velocity, u= initial velocity and a=acceleration, when the final velocity of the projectile along the y axis=0.