A swimmer can swim at a velocity v in still water. She swims upstream a distance d against the current, which has a velocity u.
1 answer:
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Answer:
Explanation:
from steam tables , at 250 kPa, and at
T₁ = 80⁰C ⇒ h₁ = 335.02 kJ/kg
T₂ = 20⁰C⇒ h₂ = 83.915 kJ/kg
T₃ = 42⁰C ⇒ h₃ = 175.90 kJ/kg
we know
according to energy balance equation
Answer:
Explanation:
A body has acceleration when there is a change in the velocity vector, either in magnitude or direction. In this case we only have a change in magnitude. The average acceleration represents the speed variation that takes place in a given time interval.
a)
b)
Answer:
14.8 m
Explanation:
S= ut + a
where u = initial velocity
S= (0 )(2
) +
(7.4
)(2
)
S= (7.4
)(2
)
S=14.8 m