A particle moves along a straight path through a displacement d = 2.5i + cj while a force F = 8.5i + -8.5j acts on it. The displ
acement is measured in meters and the force is measured in Newtons. (Other forces also act on the particle.) What is the value of c if the work done by F on the particle is zero?
V o = 6 m/s, t = 2 s v = 10 m/s v = v o + a t a t = v - v o a = ( v - v o ) / t a = ( 10 m/s - 6 m/s ) / 2 s = 4 m/s / 2 s = 2 m/s² Answer: The runner`s acceleration is 2 m/s².
