Newton's Laws of Motion

Question

When landing after a spectacular somersault, a 25.0 kg gymnast decelerates by pushing straight down on the mat. Calculate the force (in N) she must exert if her deceleration is 7.00 times the acceleration of gravity. (Enter a number.)

 __N

Answer 1

We know that F=ma. In this case, a = 7g and m = 25.0 kg. Therefore, F = 25 * 7 * 9.8 = 1715 N. I hope this helps!