A block of ice with mass 4.00 kg is initially at rest on a frictionless, horizontal surface.
Question:
A block of ice with mass 4.00 kg is initially at rest on a frictionless, horizontal surface. A worker then applies a horizontal force F to it. As a result, the block moves along the x-axis such that its position as a function of time is given by x(t) = αt2 + βt2, where α = 0.200 m/s2 and β = 0.0200 m/s3.
(a) Calculate the velocity of the object when t = 4.00 s.
(b) Calculate the magnitude of F when t = 4.00 s.
(c) Calculate the work done by the force F during the first 4.00 s of the motion.
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Related Book For 
University Physics with Modern Physics
ISBN: 978-0321696861
13th edition
Authors: Hugh D. Young, Roger A. Freedman, A. Lewis Ford
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