JEE MainPhysicsModerate

At t = 2 sec, a projectile is moving upwards. Its speed is 20 m/s
and it is making at angle 30° with horizontal. What is angle of
projection of the projectile from ground ( in degree ) ?
t = 2 sec 20 m/sec
30° ( )

Show answer and solution

[IMAGE] u cos θ = 20 cos 30°
vy = uy + ayt
20 sin 30° = u sin θ - g × 2
u sin θ = 30 m/s
tan θ = [IMAGE] TOPIC:KINEMATIC
SUB TOPIC: 2 D

Source: Grass-G / P-04 Paper 2 (Physics) Eng.+ Hindi 24-8-2020.docx

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