৮১৩৯
The time period of a second pendulum has been increased, To make its time period 2s, its length will be:
উত্তর
Increased
৮১৪০
A toy rocket is launched straight up, At the exact to of its' flight path, which of the followings is true?
উত্তর
Its velocity is zero and acceleration is 9.8 m/s2