an arrow is shot at an angle of θ=45∘ above the horizontal. the arrow hits a tree a horizontal distance d=220m away, at the same height above the ground as it was shot. use g=9.8m/s2 for the magnitude of the acceleration due to gravity.

Afish fossil is found in a rock. a foot bone and tooth are found in an older layer of the same rock. what can scientists learn from the rock? a) the area changed from land to water. b) the area changed from water to land. c) the area has always been land. d) the area was once an ocean.