good evening guys... here is your question - a ball is thrown vertically upward with a valocity u and it reaches maximum height. find the work done by gravity ( mass of ball is m ) plz explain in understoodable method
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initial velocity of a ball is = u.
total displacement covered by ball= h.
than, work done= force × displacement
than, force= mass × acceleration
=. m× -9.8m/s^2.
hence,. work done= f.s cos ¥
= -9.8m N × h cos 0°
=. -9.8mh joule (answer)
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