On a cold day, snakes usually lie very still and eat little or nothing while birds usually move around and eat a lot of food. Which statement explains this?

You observe someone pulling a block of mass 41 kg across a low-friction surface. While they pull a distance of 5 m in the direction of motion, the speed of the block changes from 5 m/s to 6 m/s.

What is the unit and tool to measure the mass of a rock?

A a force of 500 N is used to pull an object up an inclined plane. In order to move the object the total amount of work done was 1500 J. Calculate the distance the object was moved. Show your work. Include proper units in your answer

What is "Albert Einsteins" theory of general relativity?

The coefficients of friction between a block of mass 0.5 kg and a surface are μs = 0.75 and μk = 0.45. Assume the only other force acting on the block is that due to gravity.

Use g = 9.8 m/s2. From the top of a cliff, a person throws a stone straight downward. The initial speed of the stone just after leaving the person's hand is 9.7 m/s.

15 J of work were expended moving an 18 kg block. At what velocity did the block move? Provide step by step walkthrough

Define element and list two examples.

5 Sam is standing in an empty auditorium. He yells and hears his voice echo. What is happening to the sound to cause this echo?

Does the air exert a buoyant force on all objects in air or only on objects such as balloons that are very light for their size?