Answer:
A person writing on the pages
The circulation around the cylinder is 0.163Js/kg.
To find the answer, we have to know more about the stream flow.
<h3>
How to find the circulation around the cylinder?</h3>
, where d is the density at the sea level.
- We have the expression for lift per unit circulation as,
- Thus, the circulation around the cylinder is,
Thus, we can conclude that, the circulation around the cylinder is 0.163Js/kg.
Learn more about stream flow here:
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impulse = F × t
The greater the impulse exerted on something, the greater will be the change in momentum.
impulse = change in momentum
Ft = ∆(mv)
Answer:
p = -8 kg-m/s
Explanation:
Given that,
Initial speed of the rock, u = 8 m/s
Mass of the rock, m = 1 kg
The ball travels up to a maximum height, then returns to the ground.
We need to find the rock's momentum as it strikes the ground. Let v be the final speed of the rock. Its final speed is as same as initial speed i.e. 8 m/s but in negative direction. So
p = mv
p = 1 kg × (-8 m/s)
= -8 kg-m/s
So, the rock's momentum as it strikes the ground is (-8 kg-m/s).