Question

the mass of cyclist together with cycle is 100 kg . calculate the work do e by cyclist if the speed increase deom 12kh/h to 24km/h​

Answer 1

Answer:

ANSWER

1km/h=

18

5

m/s

u=6km/h=

3

5

m/s

v=12km/h=

3

10

m/s

ΔK=

2

1

mv

2

−

2

1

mu

2

=

2

1

m(v

2

−u

2

)

ΔK=

2

90

(

9

100

−

9

25

)

⟹ΔK=

2

90

×

9

75

⟹ΔK=375J