Question

A car is travelling in steady rain with constant acceleration in a straight line. When it begins to move the driver sees that the raindrops make track at an angle of $37^{\circ }$ with the vertical on the side window. After $20\sec$., the raindrops make track at an angle of $53^{\circ }$ with vertical in same direction. Find the acceleration of the car in $cm/s^2$. Rain is falling at $3m/s$.

Answer 1

Answer: 7

$\frac{3V}{5}=\frac{12}{5}$
$V=4$
$\frac{4V}{5}=\frac{9}{5}+V_C=\frac{7}{5}$
$V_C=0+a_{C}t$
$a_C=7$