A physics book slides off a horizontal table top with a speed of 1.20 m/s. It strikes the floor after a time of 0.410 s. Ignore air resistance. a. Find the height of the table top above the floor. b. Find the horizontal distance from the edge of the table to the point where the book strikes the floor. c. Find the magnitude of the horizontal and vertical components of the book's velocity just before the book reaches the floor.

4. At the construction site of a tall building, a worker is in an elevator descending at a constant downwards velocity of 5 m/s. When the elevator is 40 meters above ground level, her friend, standing at ground level, tosses a wrench straight upward with an initial speed of 25 m/s. Take the time when the wrench is tossed as t = 0. For this problem, use g = 10 m/s². a. Draw a labeled picture with symbols and all relevant values. Quantities that are different should be given different symbols, for example y, and Yw. b. Graph the velocities versus time of the elevator and the wrench on the same graph. Label axes of the graph (with units). C. At what time does the wrench and the elevator have the same velocity? 20 10 -10 -20 3 4 time (s) d. Which object (the wrench or elevator) is higher when their velocities are the same? By how much is one object higher than the other at this time? (s/u) ka

A javelin thrower standing at rest holds the center of the javelin behind her head, then accelerates it through a distance of 70cm as she throws. She releases the javelin 2.0m above the ground traveling at an angle of 30° above the horizontal. In this throw, the javelin hits the ground 62m away. a. What was the acceleration of the javelin during the throw? Assume that it has a constant acceleration. b. What is the speed of the javelin as it leaves the hand of the thrower? c. What is the maximum height reached by the javelin? O 10.5m 9.8m O 8.5m O 7.0m

A ball is thrown at an angle of 25° above the horizontal and it reaches a maximum height of 2.9 m. a.) What is the vertical component of the ball's initial velocity? b.) What is the magnitude of the ball's initial velocity?