I left a location by 6:38am and arrived a new location by 6: 58am. How do I calculate the time spent?
2 answers:
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Answer:
Given that
m = 5.3 kg
Fx = 2x + 4
We know that work done by force F given as
w= ∫ F. dx
a)
Given that x=1.08 m to x=6.5 m
Fx = 2x + 4
w= ∫ F. dx
w=62.7 J
b)
We know that potential energy given as
∫ dU = -∫F.dx ( w= ∫ F. dx)
ΔU= -62.7 J
c)
We know that form work power energy theorem
Net work = Change in kinetic energy
W= KE₂ - KE₁
62.7 =KE₂ - (1/2)x 5.3 x 3²
KE₂ = 86.55 J
This is the kinetic energy at 6.5m
Answer:
now his maximum speed is given as
Explanation:
Total time for which Usain Bolt accelerated is given as
now the velocity after uniform acceleration is given as
now remaining time for which he run for the finish line is given as
now the distance moved by him during uniform acceleration is given as
another distance that he moved for uniform speed is given as
now total distance moved by him is 100 m so we have
now his maximum speed is given as
