Question

A bus moves over a straight level road with a constant acceleration a. A boy in the bus in the bus drops a ball outside. The acceleration of the ball with respect to the bus and the earth are respectively –

• A. a and g
• B. a + g and g – a
• C. $\sqrt{a^{2} + g^{2}}$and g
• D. $\sqrt{a^{2} + g^{2}}$and a

Answer 1

Answer: (C)

$\sqrt{a^{2} + g^{2}}$and g

Answer 2

Acceleration of ball w.r.t. bus, = $\sqrt{a^{2} + g^{2}}$

Acceleration of ball w.r.t. earth = g