When a substance has a low viscosity, it can be said that it is: A. A gelatin type substance such as Jell-o
B. A very thin, fluid substance such as water
C. A very thick substance such as molasses
D. None of the above

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)