Jackfruit of Mass of 5kg is raised to height of 1.8metres .1, what is the potential energy at this height,2: what is the kinetic energy when it is half way down? ?

1. To calculate the potential energy of the jackfruit at a height of 1.8 meters, we can use the formula:

Potential Energy = mass * gravity * height

Given:
Mass = 5 kg
Height = 1.8 meters
Gravity = 9.81 m/s^2

Potential Energy = 5 kg * 9.81 m/s^2 * 1.8 meters
Potential Energy = 88.29 Joules

Therefore, the potential energy of the jackfruit at a height of 1.8 meters is 88.29 Joules.

2. To calculate the kinetic energy of the jackfruit when it is halfway down (at a height of 0.9 meters), we need to know the velocity of the jackfruit at that point. Without this information, we cannot calculate the kinetic energy accurately.

If we assume that the jackfruit is dropped from rest at a height of 1.8 meters, then at a height of 0.9 meters, the potential energy would have been converted entirely into kinetic energy. In this case, the kinetic energy would be equal to the potential energy at a height of 1.8 meters.

Therefore, if the jackfruit is dropped from rest, the kinetic energy when it is halfway down (at a height of 0.9 meters) would also be 88.29 Joules.