Select all of the guidelines for a bike helmet. A. helmet does not need have to be snug around the chin.
B. The helmet must fit you well.
C. The helmet should be approved by the American National Standards Institute (ANSI) or the Snell Memorial Foundation.
D. The helmet must have a rounded, smooth exterior with no snag points.

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?

Which of the following has the greatest impact on an ecosystem migratory animals predation human inference

Barney walks at a velocity of 1.7 meters/second on an inclined plane, which has an angle of 18.5° with the ground. what is the horizontal component of barney's velocity?