CBSE Class 9 Answered
A heavy leather ball and a light tennis ball of equal size are kept on the floor of a moving train when train is suddenly stopped, they are set in motion. In which direction will they move? Which one of them will attain higher velocity? (Assume that friction is same for both).
Asked by kousikroyr20 | 16 Sep, 2015, 06:37: PM
Expert Answer
Hi Sayani,
The balls are kept on the floor of a moving train.
So, when brakes are applied, the balls will start moving in the forward direction due to inertia of motion.
Since, friction is same, both of them will get the same force of push.
So, the acceleration of heavy ball will be less as a = F/m
Hence, light tennis ball will attain higher velocity.
Answered by | 16 Sep, 2015, 06:50: PM
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