Answer: 
Explanation:
Given
mass of ball m=10 kg
It is placed at a height of 150 m
It is dropped from the height and allowed to free fall for 40 m
Velocity acquired by the ball during this fall is given by 
Insert u=0, a=g

Kinetic energy at this instant

Answer:
m=image distance÷object distance
Answer:
compression
Explanation:
compression can produce faulting in rocks in the form of thrust faults and can also cause liner valleys (grabens) and mountains