plz tell this question is from work energy (Q23)
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Let's do it step by step
When she threw the stone initially , Vi = 15
Just before reaching bottom if energy is
2000 J that means Initially total Energy was 2000 J ,
as mechanical Energy conservation holds in this position
so KE + PE = 2000 (eq1) But as our question says IF we were to throw it horizontally what would be the kinetic energy before hitting the ground ?
SAME -2000
AS mechanical energy is valid , however you throw it , before touching ground the potential energy becomes zero
so from eq 1 if PE vanishes , the KE = 2000
When she threw the stone initially , Vi = 15
Just before reaching bottom if energy is
2000 J that means Initially total Energy was 2000 J ,
as mechanical Energy conservation holds in this position
so KE + PE = 2000 (eq1) But as our question says IF we were to throw it horizontally what would be the kinetic energy before hitting the ground ?
SAME -2000
AS mechanical energy is valid , however you throw it , before touching ground the potential energy becomes zero
so from eq 1 if PE vanishes , the KE = 2000
Answered by
0
Answer:
2000 joules
Explanation:
IT WOULD BE SAME.
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