a. Pascal is a derived unit because it is depend upon fundamental unit like as Kg, Meter, and Sec.
b. Mass is a fundamental quantity because it is independent with other.
c. Unit of power is a derived unit because it is depend upon fundamental unit like as Kg, Meter, and Sec.
d. Unit of length is a fundamental quantity because it is independent with other.
I hope you understand...
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According to given condition there is no height(m) given from roof of building to the ground, there height given 18 m at a point above the ground. So, h=18m , mass=3kg , g=9.8m/s2 P.E=mgh P.E=(3)(9.8)(18) P.E=529J
Explanation:
Acceleration is the rate of change of velocity with time. When acceleration increases a body moves a faster velocity.
- In the graph acceleration at time t= 100s is rapidly increasing.
- At t = 20s, the acceleration of the body is getting started up.
A vehicle at time 100s will have a faster velocity compared to one at t = 20s
Acceleration = (final velocity - initial velocity) / time
= (35-65)/10
= -3 m/s2
The answer would be 2.8m height on earth takes
2.8=1/2*9.8*t^2 => <span>s = ut +1/2at^2 </span>
