What 2 sources of friction do you have to overcome when you are walking

What are five specific findings for inactivity

What is the average speed of the car if the car is travelling at the constant speed?

Subtances found on the periodic table are considered elements compounds and molecules true or false

A 2kg block is sliding across a frictionless surface at 20m/s. The block collides with another block (inertia 1kg) that is at rest. The other block has glue on it and the two blocks stick together and move off at 3m/s.

Two objects attract each other with a gravitational force of 25 newtons from a given distance. If the distance between the two objects is reduced by a factor of 5, what is the changed force of attraction between them? A. 5 newtons B. 50 newtons C.

Molecules at room temperature move freely. What happens to the molecules when heat is removed until it freezes? Molecules group together Molecules slow down and contract Molecules speed up and expand Molecules move freely

A spring is used in a lab. It is vibrated at different frequencies and the wavelength is recorded. Using the graph of the data, what is the relationship found between frequency and wavelength? A) Frequency and wavelength are inversely related.

How do you describe the frequency of waves perceived by the observer from the moment the source appears to the moment it disappears?

What causes the stars to appear to move across the night sky?

Two waves collide and the temporary combined waves that results is smaller that the original wave. which term describes this interaction? A. destructive interference B. standing wave formation C. diffraction D. constructive interference