Ironman in his suit has a mass of 180 kg. How much gravitational potential
energy does he have if he is hovering 400 m in the air? Record your answer
to the correct number of significant digits. *

A. 2.22 J

B. 7.20 x 104 J

C. 07.06 x 105 J

D. 722 J

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)