10 J
20 J
30 J
50 J
Correct answer is C
Using, v2 = u2 - 2gx
(20)2 = u21/2 x 10 x 10
u2 = 600(m/s)2
initial K.E = - mu2
= \(\frac{1}{2}\) x 600
= 30 J
In which of the following states of matter do the molecules vibrate about their mean positions? ...
Radio waves belongs to the class of waves whose velocity is about ...
Silicon doped with aluminum and germanium doped with arsenic become? ...
The diagram above shows a balanced metre bridge, the value of x is ...
Which of the following statements about pressure is not correct? pressure ...
The diagram above illustrates a velocity-time graph. Determine the distance between X and Y. ...