Answer:
7
Explanation:
I just guessed and got it right
Answer: Twice the previous time would be taken to reach the same speed v with the puck of mass 2m.
Explanation:
Let a Force pushes the hockey puck of mass m.
Then acceleration, a= \frac{F}{m}a=mF
From the equation of motion,
\begin{gathered}\➪ v=u+at\\ v=0+\frac{F}{m}\Delta t\end{gathered}⇒v=u+atv=0+mFΔt ......(1)
In the second case, when mass is 2m, then acceleration,
a'=\frac{F}{2m}a′=2mF
and t' is the time taken.
The final speed is v,
\begin{gathered}\➪ v=0+ a't'\\ \➪ \frac {F}{m}\Delta t=\frac{F}{2m}t'\\ \➪ t'= 2\Delta t\end{gathered}⇒v=0+a′t′⇒mFΔt=2mFt′⇒t′=2Δt using equation (1)
Hence, it would take two times the previous amount of time to push the pluck of double mass.
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The problems caused by urbanization are;
- loss of aesthetic and cultural space
- increased high temperatures (heat-island effect)
- increased storm-water run-off, flooding, and pollution of waterways
<h3>What is Urbanization?</h3>
Urbanization is defined as the process whereby large numbers of people become permanently concentrated in relatively small areas thereby forming cities. The features that depict the problems caused by urbanization are;
- loss of aesthetic and cultural space
- increased high temperatures (heat-island effect)
- increased storm-water run-off, flooding, and pollution of waterways
Read more about Urbanization at; brainly.com/question/496631
What’s your exact question. Please clarify and I will try to answer you.