Part one: Multiple choices 1) A person sitting in the compartment of moving train is:
a) in the state of rest with respect to surroundings of the compartment.
b) in the state of motion with respect to surroundings of the compartment,
c) In the state of rest with respect to surrounding outside of the compartment​

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

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?

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers