Arock rolls down a steep hill. its intial velocity is 1 meter per second. by the time it reaches the bottom of the hill 30 seconds later. its velocity is 7 meters per second. what is the acceleration of the rock

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Astone is thrown into a pond. what happens to the amplitude of the resulting waves as they get farther from the point where the stone hit the water? explain.

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