For a science fair competition, a group of high school students built a kicker -machine that can launch a golf ball from the origin with a velocity of 11.2m/s and initial angle of 31.5° with respect to the horizontal.

Question

a) Where will the golf ball fall back to the ground?

b) How high will it be at the highest point of it's trajectory?

c) What is the ball's velocity vector (in Cartesian components) at the highest point of it's trajectory?

If you want to use a catapult to throw rocks and the
maximum range you need these projectiles to have is 0.67km , what initial speed do your projectiles have to have as they leave the catapult?

Answer 1

Look at this question answered by Damon over 5 years ago, just change the numbers to fit your question.

http://www.jiskha.com/display.cgi?id=1296412513

Answer 2

thanks

Answer 3

but why 1st two question answer? ??

Answer 4

please answer me.
sir!....
wating me....(°_^)

Answer 5

if you want to use a catapult to throw rocks and the maximum range you need these projectile to have is 0.67km what is the initial speed of the rocks