Which is an example of acceleration?
a. a girl walks two miles per hour north for three hours.

b. a boy walks two miles in one hour.

c. a girl drives a total distance of 240 miles in just under four hours.

d. a boy walks two meters north, turns west, and walks another two meters.

Jackson is designing a new heater, and he wants to experiment with different thermally conductive materials. which of these materials would be useful in conducting heat?

Blank liquids and gases exert a buoyant force on objects placed in them

1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engine’s effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)