A boulder weighs 300 kg. Calculate the potential energy of the boulder that is sitting on the edge of a cliff at a height of
15 m. (g = 9.8 m/s2)
PE = mgh
KE = 1/2my2
PE + KE = PE + KE

Why don't you see your reflection in water with waves or repples

Write the function getkthdigit(n, k) that takes a possibly-negative int n and a non-negative int k, and returns the kth digit of n, starting from 0, counting from the right

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.