Which of the following statements is correct about the speed of the balloon? [Show working using
a sketch ay-t, vy-t, and y-t graphs for the motion]
A. The speed of the balloon increases steadily since the acceleration and velocity are in the
same direction
B. The speed of the balloon decreases steadily since the acceleration and velocity are in the
same direction
C. The speed of the balloon remains constant since the acceleration and velocity are in the
same direction
D. The speed of the balloon is zero since the acceleration and velocity are in the same
direction
U
