Answer:
Potential energy of the object will be equal to mgh
Explanation:
Let the mass of the object is m
Acceleration due to gravity is 
Let the object is released from height h
We have to find the potential energy
Potential energy is of an object released from height h is equal to
, here m is mass, g is acceleration due to gravity and h is height from which object is released.
Explanation:
W.D. = F * s = 50N * 2m = 100J.
Gravity affet everything and it touches nothing.
Hope this helps!
9.8 is the gravitational field strength on earth, perhaps re-read the question
A) physical.
b) chemical
c) physical.
d) physical.
e) physical.
