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A 64Ib box is pushed along a flat surface by a net external of 20Ib
If it starts from rest; what will be its speed after 2 seconds?








2)If a force of 500 Ib toward the center must be exerted by the road to keep your car moving around acircular track at 30 miles/hr ; what would
be the required road force at 60 miles/hr at 90miles/hr?