When landing after a spectacular somersault, a 45.0 kg gymnast decelerates by pushing straight down on the mat. calculate the force she must exert if her deceleration is 8.00 times the acceleration of gravity.?

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.