Start Free Mock LoginAlready registered? Login here

Physics - Center of Mass Question with Solution | TestHub

PhysicsCenter of MassCollisionMedium2 minPYQ_2021

PhysicsMediuminteger

A ball with a speed of $9 m s^{- 1}$ collides with another identical ball at rest. After the collision, the direction of each ball makes an angle of $30 °$ with the original direction. If the ratio of velocities of the balls after the collision is $x : y$ , then what is the value of $x$ ?

Answer:

Solution:

From conservation of momentum along $y -$ axis.

${\vec{P}}_{i y} = {\vec{P}}_{f y}$

$0 + 0 = m v_{1} \sin 30 ° \hat{j} + m v_{2} \sin 30 ° (- \hat{j})$

$m v_{2} s i n 30 ° = m v_{1} s i n 30 °$

$v_{2} = v_{1}$ or $\frac{v_{1}}{v_{2}} = 1$

Stream:JEESubject:PhysicsTopic:Center of MassSubtopic:Collision

⏱ 2mℹ️ Source: PYQ_2021

Doubts & Discussion

Loading discussions...