During paddling of a bicycle, the force of friction exerted by the ground on the two wheels is such that it acts

in the backward direction on the front wheel and in the forward direction of the rear wheel

in the backward direction on both the front and the rear wheels

in the forward direction on both the front and the rear wheels

in the backward direction on the front wheel and in the forward direction of the rear wheel

in the forward direction on the front wheel and in the backward direction in the rear wheel

A clock with 7 cm long light seconds hand carries a 100 gm mass at its free tip. The change in momentum of the mass in 10s is

\(\frac{11}{15}\times10^{-3}\) Ns

\(\frac{22}{15}\times10^{-3}\) Ns

\(\frac{11}{9}\times10^{-5}\) Ns

\(\frac{15}{11}\times10^{-3}\) Ns

in the backward direction on the front wheel and in the forward direction of the rear wheel

\(\frac{11}{15}\times10^{-3}\) Ns

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