Why are you more likely to get a concussion when hit by a field hockey ball than a

volleyball? Answer in terms of FΔT = mΔv.

A student is working with four different solid substances: sodium (Na), calcium (Ca), copper (Cu), and iodine (I). Which substance is most likely to break easily into many smaller pieces?

Doubling the voltage in a circuit doubles the current if what is held constant?

When water changes to ice, does the link up of atoms change?

A tennis player hits a ball at an angle of 50 degrees above horizontal so that it has an acceleration of 12 m/s2. What is the horizontal component of the acceleration?

Temperature is inversely related to the average kinetic energy of a gas. a. True b. False

During summer vacation, Juan traveled a total distance of 400 miles. His trip took 8 hours. What was the average speed during his trip?

Where Pabs is absolute pressurePg, is gauge pressure, and Patm is atmospheric pressure. For example, if your tire gauge reads 34 lb/incz (pounds per square inch), then the absolute pressure is ...

The tip of a triangle is held 12.0 cm above the surface of a flat pool of water. A submerged swimmer in the pool sees the tip of the triangle at what distance above the water? Let the indices of refraction nwater = 1.33 and nair = 1.00.

What is a lever used for?

What did the romans build as a step toward environment management