Interbal forces : a) are always balanced b) are never balanced c) may or may not be balanced d) nothing can be decided

Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?

What do you think car designers do if the damage caused by a crash test is too severe?

Most short-period comets do not have randomly oriented orbits because