Slow to a stop as it moves along the runway
A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.60×105 kg, its speed is 26.8 m/s, and the net braking force is 4.30x10^5N, what is its speed 7.43 s later?
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When a 100 gram mass is suspended from a vertical spring and it remains motionless, what is the net force on the mass in this equilibrium position?
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