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faust18 [17]
3 years ago
6

If a 42kg rolling object slows from 11.5 m/s to 3.33 m/s how much work does friction do?

Physics
1 answer:
lara31 [8.8K]3 years ago
4 0

Explanation:

work done by friction = 1/2 x 42 x ( 3.33^2 - 11.5^2)

= 21 ( 11.08 - 132.25)

= 21 ( - 121.17 )

= - 2544.57 J

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An ice skater starts with a velocity of 2.25 m/s in a 50.0 direction. after 8.33 m/s in a 120 direction. what is the y-component
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at speed of 72mph, he would need 936/72=13hrs
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