Which of these is a correct statement? You can grab the ball to toss it back to the opponent
You can throw the ball to the other side on a serve
You can use your fingertips to pass the ball to your teammate (as long as you do not grab the ball)
If the ball hits your foot, you can IMMEDIATELY hit the ball with your forearms after

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?