Question

a stone is thrown vertically upward with a velocity v . kintic energy will be at the highest point​

Answer 1

At the highest point, the KE of the stone will be equal to zero (0).

[Since KE = ½ mv² = ½ m(0)² = 0.]

Reason: This is because an opposing force acts on the stone, that is, the gravitational force. It will decrease the speed of the object which will lead to 0 KE in the highest point. But if it falls down, the KE will be the highest just before it collides with the ground.

More:-

• The work-energy theorem states that, Work done = ∆KE
• The total energy remains conserved. The KE + PE = Total mechanical energy.
• KE is the energy possessed by an object due to the virtue of it's motion.
• PE is the energy possessed by an object due to the virtue of it's position or configuration.
• E_elastic = ½ kx²