A stone is thrown vertically upwards at 40 m/s. What maximum height does it reach? (Use m/s².)
Answer and explanation
Correct answer: B. m
- Step 1: At the top , so and .
- Step 2: m.
Answer
m.
Why not the others: m: The factor 2 in was left out. m: The time to the top was given instead of the height. m: was used in the denominator.
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