sagar kumar
Last Activity: 7 Years ago
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.
This is based on Newton's third law of motion. When the athlete runs a distance he/she pushes the ground with a large force (action) and so the ground also pushes the athlete with an equal and opposite force (reaction).Thus he/she is able to jump high.
So it will be the inertia of motion
