# Kinetic energy when a object is dropped from certain distance

• Nikola Tesla
In summary, the kinetic energy of the 0.06kg egg when it hits the frying pan is equal to the work done by gravity on the object as it falls. This work is calculated by multiplying the mass of the egg (0.06kg) by the height it is dropped from (0.5m). The velocity of the egg right before it hits the pan can be determined by using the equation 1/2mv^2 = mgh, taking into account the acceleration of any freely falling body (9.8 m/s^2).

#### Nikola Tesla

Drop a 0.06kg egg from 0.5m above the frying pan.

what is its kinetic energy when it hits the frying pan?

what is its velocity the instant before it hits the pan?

Hints:
Considering energy: How much work does gravity do on the object as it falls?
Considering kinematics: What's the acceleration of any freely falling body?

I get the hint, 9.8 m/s2. But, how do I solve? Do i go:
0.06x0.5 = .5(0.06) x Vsquared because GPE = KE, and then just cancel?

Almost. GPE = KE --> $mgh = 1/2mv^2$. (If you included units in your work, you'd realize that something was missing.)

## What is kinetic energy?

Kinetic energy is the energy that an object possesses due to its motion. It is the ability of an object to do work or cause a change in its surroundings.

## How is kinetic energy calculated?

Kinetic energy is calculated using the formula KE = 1/2 * m * v^2, where m is the mass of the object and v is its velocity.

## What happens to the kinetic energy of an object when it is dropped from a certain distance?

When an object is dropped from a certain distance, its potential energy (energy due to its position) is converted into kinetic energy as it falls. This means that the object's kinetic energy increases as it falls.

## Does the height of the drop affect the object's kinetic energy?

Yes, the height of the drop does affect the object's kinetic energy. The greater the height, the more potential energy the object has and therefore, the more kinetic energy it will have when it reaches the ground.

## How does air resistance affect the kinetic energy of a falling object?

Air resistance, also known as drag, opposes the motion of a falling object and can decrease its kinetic energy. This is because the object is expending energy to push through the air molecules. However, for most objects, the effect of air resistance on their kinetic energy is relatively small.