You are driving on the highway at constant speed of 60 mph for 1 hour and then 70 mph for 2 hours. What was your average speed for the 3 hours trip?

Which of the following rocks would most likely be found on the ocean floor? granite basalt marble shale

List 3 cases in which potential energy becomes kinetic energy and three cases in which kinetic energy becomes potential energy.

What is the average speed of a train that covers 80 km in 1 h, 200 km in 2 h, and 420 km in 4 h?

Element Z has a half-life of 20 minutes. In an events chain concept map tracing the nuclear decay of a 200g sample of element Z, would any of element Z remain after 160 minutes? If so, how much?

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

A stone is thrown vertically upward with an initial speed of 19.3 m/s. Neglect air resistance. The speed of the stone when it is 5.81 m higher is:

A violently rotating column of air is formed around a region of extremely low air pressure above land. Which of these weather conditions is most likely to follow? blizzard cyclone tornado hurricane

How to indicate kinetic energy

During induction, a positively charged rod is brought near to but not touching the electroscope. The presence of the charged object above the plate of the electroscope induces charges to move down into the gold leaves, giving the electroscope an

You are operating a boat with a power ventilation system. you have just fueled this boat. how long should you let the ventilation system run before starting the engine?