A single constant force F = (3 i + 4j) N acts on a 3.85 kgparticle.
(a) Calculate the work done by this force if the particlemoves from the origin to the point having the vector positionr = ( i - 4 j)m.
J
(b) What is the speed of the particle at r if its speed atthe origin is 4 m/s?
m/s
(c) What is the change in the potential energy?
J