Mathematics · Speed, Time and Distance
If a body's velocity changes from +20 m/s to -10 m/s in 4 seconds, the acceleration is _______.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1-5.0 m/s2
- 2+5.0 m/s2
- 3-7.5 m/s2✓
- 4+7.5 m/s2
Correct answer
-7.5 m/s2
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