A bullet of mass is fired with speed at above the horizontal and exits a wooden plank…

PHYSICS · Subjective · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

A bullet of mass

20\,\text{g}

is fired with speed

300\,\text{m}\,\text{s}^{-1}

60^{\circ}

above the horizontal and exits a wooden plank with speed

150\,\text{m}\,\text{s}^{-1}

30^{\circ}

below the horizontal, both motions lying in the same vertical plane. Taking the positive

x

-direction as horizontal rightward and positive

y

-direction as upward, calculate the magnitude of the change in the bullet’s momentum vector.