Alimb with mass 14 kg falls out of a tree from a height of 3.5 m. how much mechanical energy does the limb have just before it hits the ground? (assume there is no air resistance.) a. 480.2 j b. 355.3 j c. 0 j d. 49 j

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600

What are some important factors to consider when choosing a warm-up before your workout?