When landing after a spectacular somersault, a 40.0 kg gymnast decelerates by pushing straight down on the mat. Calculate the force she must exert if her deceleration is 5.00 times the acceleration of gravity.

Answer 1

F = M*a = 40 * 5*9.8 = 1960 N.

Answer 2

1960

Answer 3

F = ma = 40 x 5 x 9.8 = 1960
W = mg = 40 x 9.8 = 392
F total = 2350

Answer 4

F = ma
F = 41 x 5 x 4.9 x 2 = 2350N