A ball is thrown vertically upward with a velocity of 98 m/s. if it takes 10 seconds to reach the highest point then the acceleration of the ball is:
Correct answer: D. -9.8 m/s
- A. 9.8 m/s²
- B. 980 m/s
- C. 98 m/s²
- D. -9.8 m/s
Explanation
Using the first equation of motion: v = u + at final velocity(v) =0m/s initial velocity (u) =98m/s time (t) = 10 acceleration (a) = ? 0=98+10a -98=10a a=-9.8m/s²
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