The tibia bone in the lower leg of an adult human will break if the compressive force on it exceeds about 4 x 10^5 n (we assume that the ankle is pushing up). suppose that you step off a chair that is 0.40 m above the floor. if landing stiff-legged on the surface below, what minimum stopping distance do you need to avoid breaking your tibias? indicate any assumptions you made in your answer to this question.

The man fires an 80 g arrow so that it is moving at 80 m/s when it hits and embeds in a 8.0 kg block resting on ice. how far will the block slide on the ice before stopping? a 7.1 n friction force opposes its motion.

An alpha particle with kinetic energy 12.5 mev makes a collision with lead nucleus, but it is not "aimed" at the center of the lead nucleus, and has an initial nonzero angular momentum (with respect to the stationary lead nucleus) of magnitude l = p0 b, where p0 is the magnitude of the initial momentum of the alpha particle and b=1.40×10−12 m. (assume that the lead nucleus remains stationary and that it may be treated as a point charge. the atomic number of lead is 82. the alpha particle is a helium nucleus, with atomic number 2.) what is the distance of closest approach?

Describe a mesomorph body type and expain why this body type a sportsperson to perform well in either football swimming or cross country