A body is projected upwards at an angle of 30¤ with the horiztal of an initial speed of 200ms-1 a)in how many second will it reach the ground b)how far from the point of projection will it stirke?

3 answers

Please Help Me Out.
there is an equation for range (distance to point of impact)

where v is the launch velocity and Θ is the launch angle

r = v^2 sin(2Θ) / g

the time of flight is ... 2 v sin(Θ) / g
I do not understand the solving