1 point A cannon is aimed vertically upward and is used to launch a 44 kg circus
performer to a trapeze above. If the trapeze is 10m above the cannon, how
much energy was used by the cannon?

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

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?