3. Choose the correct answer III

Exercise condition:

3 m.

1. The unit of ‘\(g\)’ is \(ms^{-2}\). It can be also expressed as __________.

\(N kg^{-1}\)
\(cm^{2} s^{-2}\)
\(N m^{2} kg^{-1}\)
\(cm s^{-1}\)

2. One kilogram force equals to __________.

\(9.8\) \(dyne\)
\(98 \times 10^{4}\) \(dyne\)
\(980\) \(dyne\)
\(9.8 \times 10^{4}\) \(N\)

3. The mass of a body is measured on planet Earth as \(M\ kg\). When it is taken to a planet of radius half that of the Earth then its value will be __________ \(kg\).

\(M\)
\(2M\)
\(\frac { M }{ 4 }\)
\(4M\)

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