A tennis ball is thrown vertically upward with an initial velocity of +3.0 m/s. a. What will the ball's speed be when it returns to its stating point?
b. How long will the ball take to reach its starting point?
c. Find the maximum height reached by the ball.

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This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal.find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

Name the non metal condut electricity