Question

What is the kinetic energy that the device contains immediately before it hits the ground? [KE = /2*m*v-]

Answer 1

Answer:

Kinetic energy : "It is the energy possessed by body by virtue of its motion" .

Explanation:

The mechanical energy is the energy that a body has due to its motion or position .

It is of two types :

• Potential energy
• Kinetic energy

Potential energy

"It is the energy that a body has due to its position or state" .

It is given by P.E=mgh

Kinetic energy

"It is the energy that a body has due to its motion" .

The formula is : K.E=1/2mv².

For example

• A ball is placed on table .
• At that time it has potential energy .
• Now,lets say that we push it and it drops down .
• On doing this ,the potential energy of ball gets converted into kinetic energy(because it comes in motion )  and as soon as it touches the ground it stops and its kinetic energy gets converted into Potential energy again .