Question

Jake throws a rock downward from his deck at time t = 0 and it lands in his yard below.

Which of the following graphs best shows the velocity u of the rock until it hits the ground?

Answer 1

The graph that best shows the velocity u of the rock until it hits the ground is (b) in Figure 2.41.

Step-by-step explanation:

The graph that best shows the velocity u of the rock until it hits the ground is (b) in Figure 2.41.

At time = 0, the velocity is positive upward as the rock is thrown up. As time passes, the velocity becomes negative, indicating that the rock is moving downward. When the rock hits the ground, the velocity will be negative and its magnitude will be equal to the initial velocity of the rock when it was thrown.

This graph correctly represents how the velocity changes over time for a rock thrown downward.