physics
posted by Sam .
A 3.5 kg block, initially in motion, is pushed along a horizontal floor by a force F of magnitude 17 N at an angle θ = 35° with the horizontal (Figure 620). The coefficient of kinetic friction between the block and floor is 0.25. (Assume the positive direction is to the right.)
Figure 620
(a) Calculate the magnitude of the frictional force on the block from the floor.
N
(b) Calculate the magnitude of the block's acceleration.
m/s2

999
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