Final answer:
This question pertains to a projectile motion problem in physics where a ball is tossed upwards from a moving platform. To answer, you would draw graphs of the ball's constant horizontal velocity and its changing vertical velocity against time, illustrating the nature of projectile motion and the independence of the vertical and horizontal components.
Step-by-step explanation:
The question involves a projectile motion scenario where a student on a moving platform tosses a ball straight up. According to the principles of physics, the motion of the ball can be analyzed separately in the horizontal (x) and vertical (y) directions. The horizontal motion is affected only by the initial velocity of the platform since no horizontal forces are acting on the ball. The vertical motion is influenced by gravity.
To answer several parts of this type of question, one would need to draw and label graphs of both the horizontal and vertical velocities of the ball against time. For the horizontal velocity, the graph would be a flat, horizontal line indicating a constant velocity, starting from the initial horizontal velocity at t = 0 until t = 0.7 sec or until the ball lands.
The vertical velocity graph would involve an initial velocity at the point of release, then it would decrease linearly due to gravity (9.80 m/s² downwards), reaching zero at the peak of the toss and then becoming negative during the fall, representing downward motion.
Underlying the experiment design is the concept that the acceleration due to gravity is constant (-9.80 m/s²) and acts only in the vertical direction and is independent of the object's velocity. The vertical and horizontal components of the motion are independent of each other in projectile motion.