Question

how to calculate kinetic energy of a projectile at the highest point of a projectile?

Answer 1

i think it is the way we did in ruchi's problem.
KE = 1/2 m (ucos theta)^2
i've checked online....and this is what i got everywhere.

Answer 2

For a projectile problem, the total energy is equal to the kenitic energy 1/2 mvv plus the potential energy mgh. Initially the total energy is all kinetic energy ant the highest ponint the energy is all potential.os kenitic energy is 0.

Answer 3

@roy402a the KE at the highest point is not 0. since the velocity at that point is not 0. only the vertical component of velocity = 0. the horizontal component remains constant throughout the motion. so the projectile has KE all throughout its motion.

Answer 4

no rdx said its the change wats it?

Answer 5

i know he did. even i didn't understand what he meant. he told me to google it. i did and i only found the relation i posted above. there was nothing about change in KE.

Answer 6

thnx vaidehi

Answer 7

:) but i'd suggest u clear it out with Rdx as well.