Question

An object of mass M is moving with a velocity 30 metre per second for 20 minutes from the initial velocity 10 metre per second and produces the acceleration in the forward direction of the force applied on that object is 75 Newton what should be the mass of the object?
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Answer 1

Answer:

Given,

Initial velocity = 30m/s

Final velocity = 10m/s

Time = 20min = 1200sec

Force = 75N

To find:-

Mass

By applying V - U = at

10 - 30 = a×1200

-20 = 1200a

a = -0.0166m/s^2

By applying F = ma

m = f/a

= 75/0.0166

= 4500kg.