Question

- A connex minor used in a bus has radius of
curvature 3.5 metres. If the driver of the bus
locates a car at 10cm behind the bus. Find the
position, nature & size of the image of the car class 10th ​

Answer 1

$Given:</p><p></p><p>Initial velocity=u = 50cm/s</p><p></p><p>Acceleration= a = 20 cm/{s}^{2}cm/s2</p><p></p><p>Time = t= 4s</p><p></p><p>━━━━━━━━━━━━━━</p><p></p><p>Need to find :</p><p></p><p>Final velocity = v=?</p><p></p><p>Distance travelled = s=?</p><p></p><p>━━━━━━━━━━━━━━</p><p></p><p>Solution :</p><p></p><p>From 1st equation of motion we know,</p><p></p><p>v = u + atv=u+at</p><p></p><p>\implies \: v = 50 + 20 \times 4 cm/s⟹v=50+20×4cm/s</p><p></p><p>\implies \: v = 50 + 80 cm/s⟹v=50+80cm/s</p><p></p><p>\red{\bf{ \implies \: v = 130cm/s}}⟹v=130cm/s</p><p></p><p>━━━━━━━━━━━━━━</p><p></p><p>From 2nd equation of motion we know,</p><p></p><p>s = ut + \dfrac{1}{2}a {t}^{2} cms=ut+21at2cm</p><p></p><p>\implies \: s = 50 \times 4 + \dfrac{1}{2} \times 20 \times {4}^{2} cm⟹s=50×4+21×20×42cm</p><p></p><p>\implies \: 200 + 160cm⟹200+160cm</p><p></p><p>\red{\bf{ \implies \: s = 360cm}}⟹s=360cm</p><p></p><p>$