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Finding Average Velocity

A particle is...

Question

A particle is projected vertically upwards with a velocity of 40 m/s. Find the displacement and distance covered by the particle in 2 seconds ?

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Solution

$i n i t i a l v e l o c i t y u = 40 m / s a c c e l e r a t i o n a = - g d i s \tan c e o r d i s p a c e m e n t a f t e r 2 s e c o n d s t r a v e l l e d = s t i m e t = 2 s s = u t + \frac{1}{2} a t^{2} s = 40 \times 2 - 0.5 \times 9.8 \times 4 s = 60.4 m$

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