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3a. Three smart gates are evenly spaced on a tilted track. Theseparation between two adjacent gates is 30.0cm. When a racquetballrolls down the track, it passes the top gates with a speed 0.67m/sthe middle gate with a speed 0.87m/s. What is its speed (in unit ofm/s) when passing the bottom gate? 1.03m/s 1.04m/s 1.05m/s 1.06m/s1.07m/s C. Two smart gates are 40.0cm apart on a tilted track.Starting from rest, a racquetball rolls down the track. It passesthe first gate with a speed 0.94m/s, the second gate 1.47m/s.How long (in unit of meter) is the starting point of the ball tothe first gate? Group of answer choices 0.214m 0.277m 0.310m 0.40mD. Which one of the following can NOT be a valid unit ofacceleration? Group of answer choices M i l e H o u r 2 F t s e c 2M e t e r M i n u t e E.How many centimeter are equivalent to 0.61meter? F. This problem may sound very different from this week'sexperiment, but since free fall is also a one-dimensional motionwith constant acceleration, the same physics covered in theexperiment can be applied the same way. G.A base ball is thrownstraight up with an initial speed 8.93 m s . How high above itsrelease point can it reach? (Hint: please note that the initialvelocity and the acceleration of the ball are in oppositedirection.) This problem may sound very different from this week'sexperiment, but since free fall is also a one-dimensional motionwith constant acceleration, the same physics covered in theexperiment can be applied the same way. For a base ball droppedfrom rest, what is its speed (in unit of m s ) after it falls1.1m?4