with what doyou measure kinetic energy with?

Question

i need to knowan instramentwithwhichyou do so

Answer 1

There are machines that measure momentum, then based on the mass you compute kinetic energy.

For example, the classic bullet and pendulum.
If a bullet of mass m moving at speed vb embeds itself into a pendulum mass of M and that pendulum displaces a height h, then
(M+m)*g*h=.5*(M+m)*vp^2
simplify
vp=sqrt(2*g*h)
where
vp*(M+m)=m*vb
so vp=vb*m/(M+m)
and
vb=(M+m)*sqrt(2*g*h)/m
and the kinetic energy of the bullet is
(M+m)^2*g*h/m

j

Answer 2

if you know the mass and speed of an object than you can easily calculate the kinetic energy of an object.

.5mv^2

m=mass
v=velocity