Complete the following :
(a) 1 nano second = ..............................S.
(b) 1μs =................................S.
(c) 1 mean solar day = ................................S.
(d) 1 year =.................................S.
A body has an initial velocity 4 ms−1and its final velocity is 1 ms−1, then what is the acceleration after traveling 2m?
The escape velocity from the earth is about 11kms−1. The escape velocity from a planet having twice the radius and the same mean density as the earth, is