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16-01-2020
Physics

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A 0.250 kg toy truck is rolling across the floor at a rate of 1.25 m/s. It is pushed by your sister with a force of 0.5 N over 2.2 s in the same direction of travel. What is its new velocity when she lets go to watch it?

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MathPhys MathPhys

16-01-2020

Answer:

5.65 m/s

Explanation:

F = ma

F = m Δv / Δt

0.5 N = (0.250 kg) (v − 1.25 m/s) / (2.2 s)

v = 5.65 m/s

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