A student throws a set of keys vertically upward to her sorority sister, who is in a window 3.20 m above. The second student catches the keys 2.80 s later. (a) with what initial velocity were the keys thrown? magnitude direction --Select- m/s (b) What was the velocity of the keys just before they were caught? magnitude direction Need Help? --Select- Master It m/s [-/1 Points] DETAILS SERPSE10 4.3.OP.007.MI. In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is 1.32 m. The mug slides off the counter and strikes the floor 1.20 m from the base of the counter. (a) with what velocity did the mug leave the counter? m/s (b) What was the direction of the mug's velocity just before it hit the floor? (below the horizontal) A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 9.40 m/s at an angle of 18.0 below the horizontal. It strikes the ground 4.00 s later. (a) How far horizontally from the base of the building does the ball strike the ground? m (b) Find the height from which the ball was thrown. m (c) How long does it take the ball to reach a point 10.0 m below the level of launching? S