The speed of sound in air is about 340 meters per second. You see a flash of lightning, then hear the thunder 9 seconds later. Calculate the distance between you and the storm in meters, then convert to kilometers.

suppose the same chest is at rest. you push it horizontally with force of 110N but it does not budge. What is the contact force on the chest due to the floor

Unblanced forces cause: reversal inertia motion gravity

You run straight off a high diving board at a speed of 6 m/sec. You hit the water 2 seconds later. a. How far did you travel horizontally during the 2 seconds? b. How far did you travel vertically during the 2 seconds? c.

Abdul has not eaten in a while, so his endocrine system releases hormones that slow the process of digestion, which in turn slows the production of materials for new cells. What process in Abdul is being regulated by hormones?

In 8.5 s a fisherman winds 2.4 m of fishing line onto a reel whose radius is 3.0 cm (assumed to be constant as an approximation). The line is being reeled in at a constant speed. Determine the angular speed of the reel.

If a tennis ball has a velocity of 18 m/s and a momentum of 1.06 kg • m/s, what is the mass of the tennis ball in grams?

Why does it rain so hard?

Three liquids are at temperatures of 5 ◦C, 25◦C, and 34◦C, respectively. Equal masses of the first two liquids are mixed, and the equilibrium temperature is 17◦C.

The air you breathe is an example of a (n) ?

How do fluids move? Explain.