How long will it take to move the mass through 20m, if a 5 N force acts on a 2.5 kg mass at rest, making it accelerate in a straight line, What will be its velocity after 3 seconds.

How long will it take to move the mass through 20m, if a 5 N force act

1.	How long will it take to move the mass through 20m, if a 5 N force acts on a 2.5 kg mass at rest, making it accelerate in a straight line, What will be its velocity after 3 seconds.
Answer» (l) 4.5s approx.(ll) 6m/sExplanation:(I) u = 0S = 20m F = 5Nm = 2.5kgF = MA5 = 2.5aa = 5/2.5 = 2m/s^2 S = UT + 1/2 at^220 = 0×t + 1/2 ×2× t×t20 = t^2t = √20 s = 4.5 s approx.(ll) t = 3 SU = 0m/sv= u + atv = 0+2×3v = 6m/s

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How long will it take to move the mass through 20m, if a 5 N force acts on a 2.5 kg mass at rest, making it accelerate in a straight line, What will be its velocity after 3 seconds.

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