pls tell me the reason.........
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.... Now get your brainliest answer......
v=72 km/h=20m/s ,u=18 km/h=5m/s
work = 1/2mv^2 - 1/2 mu^2
= 1/2*2*20^2 - 1/2*2*5^2
= 20^2 - 5^2
=400 - 25
=375 joules.
.... Thanks be always brainliest
Anonymous:
Abhi bhi physics hi padh rahe ho
Hey Bhagwaa
aapko kya problem h bhai.... main kuch bhi padhu
Kuch na padho
Hm toh bas aise hi bol rhe the
Thora padhi ke beech mi masti ho Jata h toh isme Bura kya h
Answered by
2
work required = change in kinetic energy
= 1/2 m ( V2^2 - V1^2)
= 1/2 × 2× ( 72× 1000/3600^2 - 18× 1000/3600^2)
= 5/18 )^2( 72^2 -18^2)
= 5/18 × 5/18 × 54 × 90
= 375 J
= 1/2 m ( V2^2 - V1^2)
= 1/2 × 2× ( 72× 1000/3600^2 - 18× 1000/3600^2)
= 5/18 )^2( 72^2 -18^2)
= 5/18 × 5/18 × 54 × 90
= 375 J
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