Agolf ball is launched with 15 m/s at 30. draw the forces acting on the ball and construct the net force in order to determine the direction of the acceleration while the ball is in the air in the case (a) all friction forces are negligible and there is no wind; and (n) ftriction forces are taken into account and there is wind with constant velocity

Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s. assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.

The receptor cells that convert light energy into neural signals are called

Which of the following describe possible scenarios? a) an object has zero instantaneous velocity and non-zero acceleration. b) an object has negative acceleration and is speeding up. c) an object has positive acceleration and constant velocity. d) an object has positive velocity and zero acceleration. e) an object has increasing positive position and negative velocity. f) an object has decreasing positive position and negative acceleration.