In major league baseball, the pitcher's mound is 60 feet from the batter.

If a pitcher throws a 91 mph fastball, how much time elapses from when the ball leaves the pitcher's hand until the ball reaches the batter?

An auto moves 10 meters in the first second of travel, 15 more meters in the next second, and 20 more meters during the third second. The acceleration of the auto is

Describe two forms of energy-efficient transportation.

A defibrillator passes 14.0 A of current through the torso of a person for 0.0300 s. How much charge moves in coulombs?

Marcia pokes fun at her husband Brian because he loves to sing in the shower every morning, but his singing is terribly off-key. On the other hand, Brian teases Marcia for talking so loudly when she's on the telephone.

Which condition is necessary for a standing wave? A) two interfering waves of the same frequency must travel in opposite directions B) two interfering waves of the same frequency must travel in the same direction C) two interfering waves of the same

given that a car's distance from a stop sign t seconds since it started moving is represented by d=t2-2t determine the car's average speed over each interval of elapsed time

A ball hits a wall. What is true about the magnitude of the force experienced by the ball compared with the force experienced by the wall? OA. The ball experiences more force than the wall. OB. The ball experiences less force than the wall.

A swimmer jumps from a waterfall thats is 8.5 m high from the lake below. How fast must he run horizontally to dive 2.5m away from the base of the waterfall?

What happens (as far as energy goes) when a molecule of gas strikes the wall of a container?

The boom of a fire truck raises a fireman (and his equipment - total weight 280 lbf) 60 ft into the air to fight a building fire.