KingFUFU
contestada

At a height of 10.0 meters above Earth's surface, the potential energy of an object is 196 joules.
After the mass falls 5.00 meters, how much kinetic energy does it gain?

Respuesta :

Answer:

To determine the change in kinetic energy of the object as it falls from a height of 10.0 meters to 5.00 meters, we can use the equation KE = 1/2 mv^2, where KE is the kinetic energy, m is the mass of the object, and v is the velocity. We can also use the equation for gravitational potential energy, which is PE = mgh, where PE is the potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height above the ground.

We know that the potential energy of the object at a height of 10.0 meters is 196 joules, so we can use this information to solve for the mass of the object:

196 = m * 9.80 * 10.0

196 = 98.0m

m = 2.00 kg

We can then use this value for the mass to find the kinetic energy of the object as it falls from a height of 10.0 meters to 5.00 meters:

KE = 1/2 * 2.00 * v^2

KE = 1/2 * 2.00 * (2gh)^2

KE = 1/2 * 2.00 * (2 * 9.80 * 5.00)^2

KE = 196 joules

Thus, the object gains 196 joules of kinetic energy as it falls from a height of 10.0 meters to 5.00 meters.