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Homework Statement A box of books weighing 329 N is shoved across the floor by a force of 484 N exerted downward at an angle of 32◦ below the hori- zontal. The acceleration of gravity is 9.81 m/s2 . If μk between the box and the floor is 0.57, how long does it take to move the box 3.66 m...

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Homework Statement A ball is thrown straight upward and returns to the thrower’s hand after 1.54 s in the air. A second ball is thrown at an angle of 30.0◦ with the horizontal. The acceleration of gravity is 9.81 m/s2 . At what speed must the second ball be thrown so that it reaches the same...

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Homework Statement (X-Axis = Time) 1. Find the instantaneous acceleration at 4 s. Answer in units of m/s2. 2. Find the instantaneous acceleration at 7 s. Answer in units of m/s2.Homework Equations Unknown, I'm assuming you'll use: Acceleration Average = Delta V(final)-V(initial)/Delta TThe...