If you have a 4kg book sitting on a 1m high table, calculate the Potential Energy of the book where the zero level is… on the floor, on the table, or on the 5m high ceiling?

If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

Which of the following is a true statement about the acceleration ~a of the pendulum bob ~a is equal to the acceleration due to gravity. ~a is perpendicular to the bob’s trajectory. ~a is equal to the instantaneous rate of change in velocity. ~a is tangent to the bob’s trajectory.

Which of hubble’s discovery support the big bang theory