You pull a 200 kg box straight up with a rope connected to a helicopter. If the magnitude of the tension is 2000 N, what is the acceleration of the box?
1.748 m/s^2
4.055 m/s^2
5.112 m/s^2
2.308 m/s^2

What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?

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?

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?