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Grade: 12th pass
        
if a body is projected with a velocity 20 root 2 m/s making an angle 45 degree with the horizontal. Then initial velocity of the particle in vector form....
3 years ago

Answers : (2)

Nishant Vora
IIT Patna
askIITians Faculty
2467 Points
							20 root2 can be resolved in hori and vertical direction as 20 root2 cos45 and 20 root2 sin45.

3 years ago
Rahul Verma
45 Points
							
20\sqrt{2} can be resolved in two components  20\sqrt{2}sin45  in vertical directon and 20\sqrt{2}cos45 in horizontal direction
so in vertical direction component =20\sqrt{2}\times \frac{1}{\sqrt{2}}=20 which can be written in vector as 20j
in horizontal direction component =20\sqrt{2 }\times \frac{1}{\sqrt{2}}=20which can be written in vector as 20i
adding both the vectors we get 20i + 20j
3 years ago
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