In an otherwise empty room, Declan throws a ball straight up in the air. Standing next to him is Ravi who is watching the ball. Assuming there are no other forces acting on the ball besides gravity, what will happen to the ball after Declan throws it, and will Ravi be able to see the ball the entire time it is in the air?

Provide a very brief response.
The ball will go upwards until it reaches a peak height where its upward motion stops, then it will reverse direction and fall back down due to gravity. Ravi will be able to see the ball the entire time while it is in the air, provided that both Declan and Ravi remains stationary, and there are no obstructions to Ravi's line of sight. The ball's visibility to Ravi would only be impeded if an obstruction were introduced or if Ravi or Declan moved into a position that blocked Ravi's view of the ball's trajectory.