Question

An athlete runs some distance before a long jump because

a) it helps him to apply large force

b) by running force increase

c) he gains energy

d) to get large inertia of Motion

Answer 1

option D is correct to get large inertia of motion.


It can also be explained as following :

An athlete runs before jumping to gain momentum. Because it helps in jumping higher and longer because of inertia of motion gained due to the motion.
When the athletes Jump they already have a forward motion that would be greater than that of a jump made from standing in one spot.