Question

A projectile is fired with kinetic energy 1kJ.
If its range is maximum,what will be its kinetic energy at the highest point?

Answer 1

@experimentX @hartnn

Answer 2

Find potential energy first,

Answer 3

For maximum range, if there's no air friction, the angle must be 45 degrees.

Answer 4

Rmax=u^2/g

Answer 5

what's u?

Answer 6

initial velocity

Answer 7

Try this:
h max=v0y^2/2g
h max=(v0*sin45)^2/2g
What's the potential energy at h max?

Answer 8

i hope the answer is 1/2 kj

Answer 9

yeah..500J..thanks!

Answer 10

yo i got it u want explanation ..................