An object is launched horizontally with a speed of 8.0 m s-' from a point 20 m from the
ground.
(a) How long will it take the object to land on
the ground?
(b) What is the speed of the object 1 s after
launch?
(c) What angle does the velocity make with
the horizontal 1 s after launch?
(d) With what velocity does the object hit the
ground?

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