If a ball goes at 20 miles per hour what's the velocity

Sam and Sally are both running the mile at the region track meet. One mile equals four laps around the oval track. They are neck and neck during most of the race, but at the half-mile mark Sam starts to pull ahead.

A stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates. The incident water stream has a velocity of + 18.0 m/s, while the exiting water stream has a velocity of - 18.0 m/s.

What is the weight of an object (mass = 60 kilograms) on Mars, where the acceleration due to gravity is 3.75 meters/second2?. Select one of the options below as your answer:. A. 1.6 newtons. B. 16 newtons. C. 22.5 newtons. D. 225 newtons. E.

A current of 12 amps is measured in a circuit with a total resistance of 9.0 ohms. What is the size of the voltage source that supplies this circuit?

A capacitor consists of two plates that each contain electric charges. How does the type and amount of charge on one plate compare with the type and amount of charge on the other plate?

To remove 700 j of heat from a refrigerator, the compressor in the refrigerator does 500 j of work. How much heat is released into the surrounding room

The elements least likely to form bonds are found in group__ a) 15 b) 16 c) 17 d) 18

F a metal ball suspended by a rod is at rest, which force is responsible for balancing the force due to gravity?

If the mass of a material is 48 grams and the volume of the material is 8 cm^3, what would the density of the material be?

Your family is moving to a new house. While lifting the box 1.5 m straight up you exerted a force of 200 N for 1 second. How much work is required?