Displacement (s) of an object equals, velocity (u) times time (t), plus ½ times acceleration (a) times time squared (t2). Use standard gravity, a = 9.80665 m/s2, for equations involving the Earth's gravitational force as the acceleration rate of an object.
That symbol represents a source of DC, usually a battery.
The zig-zag line represents a resistor, and the two little circles
connected by a short line represent a switch in the closed position.,
The energy that the man has gained in being lifted is 3000J which is in the form of potential energy.
<u>Explanation:</u>
Given:
Work done, W = 3000J
Height, h = 2.5m
Time, t = 0.4 seconds
Energy gained = ?
As the man gets lifted, it gains potential energy.
Potential energy will be equal to the work done by the elevator.
We know,
potential energy = mgh
Thus, the energy that the man has gained in being lifted is 3000J which is in the form of potential energy.
Answer:
72.324 J
Explanation:
Formula for gravitational potential energy is given by;
GPE = mgh.
Where;
m = mass
g = acceleration due to gravity
h = height
We are given;
m = 4.1 kg
h = 1.8 m
Thus;
GPE = 4.1 × 9.8 × 1.8 = 72.324 J
Hello ? What compounds are you referring to ?
