A body is projected at with a velocity | Projectile Motion

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JEE MAIN 2019

11-01-2019 S1

Question

A body is projected at $t=0$ with a velocity $10 \mathrm{~ms}^{-1}$ at an angle of $60^{\circ}$ with the horizontal. The radius of curvature of its trajectory at $t=1 \mathrm{~s}$ is $R$. Neglecting air resistance and taking acceleration due to gravity $g=10 \mathrm{~ms}^{-2}$, the value of $R$ is

Select the correct option:

A

5.1 m

B

2.5 m

C

2.8 m

D

10.3 m

✓ Correct! Well done.

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