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25-10-2019
Physics

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how long does it take for a particle to move with initial velocity 80km/hr to 100km/hr in 100m

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MathPhys MathPhys

25-10-2019

Answer:

4 s

Explanation:

Given:

v₀ = 80 km/hr = 22.2 m/s

v = 100 km/hr = 27.8 m/s

Δx = 100 m

Find: t

Δx = ½ (v + v₀) t

(100 m) = ½ (27.8 m/s + 22.2 m/s) t

t = 4 s

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