volume_mute

What is the speed of an object thrown upward with a starting speed of 29.4 at third second?

publish date: 2022/05/26 08:28:00 GMT+10

volume_mute

upward acceleration.png

0 m/s
2 m/s
1 m/s
0.5 m/s

Correct Answer

0 m/s

Explanation

Gravity acceleration is the same downward or upward.  The object is decelerating at a speed of 9.8 m/s.  So, it will be = 29.8 - (9.8 - 9.8 - 9.8) = 0 m/s

Reference

Basic Physics: A Self-Teaching Guide

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