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Physics - Kinematics Question with Solution | TestHub

PhysicsKinematics2-D & 3DMedium3 minQB

PhysicsMediumnumerical

A perfectly elastic ball is thrown from the foot of a 30° incline; it strikes the incline 10 m away and retraces its path. The projection speed is: (Take $g = 10 m / s^{2}$ )

Answer:

13.20

Solution:

$u = \frac{g R ( 1 + 3 s i n ^{2} β )}{2 s i n β} = \frac{10 \times 10 \times ( 1 + 3 \times 0.25 )}{2 \times 0.5} = 175 = 13.2 m / s$ .

Stream:JEESubject:PhysicsTopic:KinematicsSubtopic:2-D & 3D

⏱ 3mℹ️ Source: QB

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