A person doing a chin-up weighs 725 N, disregarding the weight of the arms. During the first 28.0 cm of the lift, each arm exerts an upward force of 363 N on the torso. If the upward movement starts from rest, what is the person's speed at this point?

Which of the following is an example of units for speed

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

Which of the following is another term for a planned economy