Ablock of mass 3 kg, which has an initial
speed of 4 m/s at time t = 0, slides on a
horizontal surface.
find the magnitude of the work that must
be done on the block to bring it to rest. answer in units of j if a constant friction force of magnitude 2 newtons is exerted on the block by the surface, find the magnitude of the acceleration of the block.
how far does the block slide before it comes to rest? units of m