If velocity is not large,then on which factor does the damping force on an oscillator in a medium depend?

The amplitude of a wave is represented by $A = \frac{c}{a + b - c}$. Resonance will occur when:

Explain the behaviour of the oscillator when the driving frequency is far from the natural frequency in small damped oscillations.

Which of the following statements regarding the damping force of a damped oscillator is $NOT$ correct?

$A$ block of mass $100 \,g$ is connected to an elastic spring of spring constant $450 \,N m^{-1}$ and oscillates vertically. The block-spring system is in a viscous surrounding medium with a damping constant $b = 69.3 \,g \,s^{-1}$. Calculate the time in which the amplitude of oscillations drops to half of its initial value. (Take $\ln 2 = 0.693$) (in $\,s$)

Sometimes when the speed of a vehicle is increased,its body starts to bounce. Why?