Why do High Jump athletes have to run in order to get over the bar instead of just jumping?
Dear student,
According to Newton's Third law of motion, “For every action there is an equal and opposite reaction force. When a High Jump runner takes off running to get over the bar their feet are pushing down on the floor. When they push down on the floor, the floor is also pushing up on them propelling them forward. When they jump they push down on the floor, the force that from the floor pushes them up and therefore making them jump upwards.
Friction saves the runner’s feet from slipping off the floor. If there had been no friction between the souls of the runner’s shoes and the floor, the runner would fall. Also there wouldn't be sufficient grip to jump over the ball.
When a High Jump athlete first starts their jump they are not moving. They then increase their speed fast by running. As by speeding up, they also bend their running path, known as acceleration. Without Acceleration, the High Jump would be very tough to complete.
The runner wants speed in order to complete the High Jump. If the runner did not have speed it would be tough to jump over the bar. Standing still and just diving over the bar would not work very well that is why a runner must have speed to help complete the jump.
Regards,
According to Newton's Third law of motion, “For every action there is an equal and opposite reaction force. When a High Jump runner takes off running to get over the bar their feet are pushing down on the floor. When they push down on the floor, the floor is also pushing up on them propelling them forward. When they jump they push down on the floor, the force that from the floor pushes them up and therefore making them jump upwards.
Friction saves the runner’s feet from slipping off the floor. If there had been no friction between the souls of the runner’s shoes and the floor, the runner would fall. Also there wouldn't be sufficient grip to jump over the ball.
When a High Jump athlete first starts their jump they are not moving. They then increase their speed fast by running. As by speeding up, they also bend their running path, known as acceleration. Without Acceleration, the High Jump would be very tough to complete.
The runner wants speed in order to complete the High Jump. If the runner did not have speed it would be tough to jump over the bar. Standing still and just diving over the bar would not work very well that is why a runner must have speed to help complete the jump.
Regards,