Question 1 A boy is riding the Go Train facing the back while the train is travelling at a constant velocity of 13.0 m/s forward. The train approaches a scheduled stop and begins to slow down immediately after the boy tosses a ball straight upwards. The ball will land O Directly back into his hands. O Behind the boy. O In front of the boy. Question 2 A ball is thrown from a jungle gym at an angle 17.0 above the horizontal. The instant after the ball is thrown, the magnitude of its acceleration is O Equal to g. O Greater than g. O Less than g. Question 3 Which of the following quantities are zero for a projectile during its entire flight? Select all that are true. Ov Day Dax O Vy O X O VX Dy Question 4 A missile is fired over horizontal ground at an angle of 61.0. At what point on the trajectory are [(v)\\vec] and [(a)\\ec] parallel to each other? There is no point where vand a are parallel to each other. O At the end of the trajectory. O At the top of the trajectory At the beginning of the trajectory