Shown is a person stationary in their frame of reference watching a moving cart. On the moving cart is a second person who remains stationary on the cart in their frame of reference. The cart is moving with velocity=v. The person on the cart throws a baseball with velocity=0.5v in the frame of reference of the cart.

Power can be defined as a. the distance over which work was done. b. how much work can be done in a given time. c. all the work in an given area. d. the energy required to do work.

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of