A 0.2kg ball moving at 25m/s at 53∘ to a wall rebounds elastically at 37∘ with speed 20m/s. What is the impulse magnitud
Initial: px1=0.2×25×0.6=3kg m/s, py1=0.2×25×0.8=4kg m/s. As per NCERT Chapter 3, equations v=u+at, s=ut+½at², v²=u²+2as describe uniformly accelerated motion. Applying correct signs and units gives 5 N s as the result, so option A is correct.
Ref: NCERT Class 11 Physics > Chapter 3: Motion in a Straight Line > Topic: Straight Line Motion - Practice Set0