Question

A ball is rolling from A to D on a flat and smooth surface its speed is 2 cm/s on reaching B it was pushed continuously up to C on reaching be from sea its speed had become 4 cm/s it took 2 seconds for it to go from B to C what is acceleration of the ball as it goes from B to C?

Answer 1

v= u + at
v= 4cm/s
u= 2cm/s
therefore, a= 1cm/s square