# A body is projected at t=0 with a velocity 10 ms−1 at an angle of 60° with the horizontal. The radius of its trajectory at t=1s is R. Neglecting air resistance and taking acceleration due to gravity g=10 ms−2, the value of R is: (a) 2.5 m (b) 10.3 m (c) 2.8 m (d) 5.1 m

## Question ID - 50288 :- A body is projected at t=0 with a velocity 10 ms−1 at an angle of 60° with the horizontal. The radius of its trajectory at t=1s is R. Neglecting air resistance and taking acceleration due to gravity g=10 ms−2, the value of R is: (a) 2.5 m (b) 10.3 m (c) 2.8 m (d) 5.1 m

3537

=10cos60°=5 m/s

=10cos30°=5 m/s

velocity after t=1 sec

=5 m/s

=m/s=10−5

an==

==2⇒θ=15°

R==2.8m

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