Verified Solution • 2025–26 Session moderate

QNEET-2016-Ph-1164: NEET 2016 Physics - Class 11 NEET-2016-Ph-1164 Solution: A rigid ball of mass m strikes a rigid wall at \(60^ \) and…

A rigid ball of mass m strikes a rigid wall at 60∘60^\circ and gets reflected without loss of speed as shown in the figure. The value of impulse imparted by the wall on the ball will be mV 2mV mV/2mV/2 3mV3mV

Multiple Choice Options

  • A mVmV mV
  • B 2 mVmV mV
  • C mV2{{mV} \over 2} 2 mV _
  • D mV3{{mV} \over 3} 3 mV _

Step-by-Step Verified Solution

Given, p i = p f = mV Change in momentum of the ball = p _ f _ p _ i = ( _ p f x i ^ _ p f y j ^ ) _ ( _ p i x i ^ _ p i y j ^ ) = _ i ^ ( p f x + p i x ) _ j ^ ( p f y + p i y ) = _ 2 p i x i ^ = _ m V i ^ [ _ p f y _ p i y = 0 ] Here, p ix = p fx = p i cos 60� = m V 2 _ Impulse imparted by the wall = change in the momentum of the ball = mV.

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