A.33
B.70
C.100
D.140
Answer:
D. 140
Step-by-step explanation:
Substituting the distance of 20ft (converted to approximately 6.096 meters) into the equation V^2=64s, we calculate that the pencil would hit the ground with a speed of approximately 31.4 m/s.
In this physics problem, we utilize the formula V^2=64s, which connects the speed (V) and the distance traveled (s). The step we are interested in involves substituting known values into our equation. Given that s
is an altitude of 20ft (which we convert to approximately 6.096 meters for consistency in units), we substitute this into our equation and solve for V. This yields V = √(64*6.096). By carrying out this square root, we determine that the pencil hits the ground at approximately 31.4 m/s.
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