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Q. a basketball player who is 2.00 m tall is standing on the floor 10.0 m from the basket. If he shoots the ball at a 40.0 degree angle with the horizontal, at what initial speed must he throw so that is goes through the hoop without striking the backboard? The basket height is 3.05m

Q. A proton accelerates from rest in a uniform electric field of 630 N/C. At some later time, its speed is 1.4 e66 m/s.

(a) Find the magnitude of the acceleration of the proton.

(b) How long does it take the proton to reach this speed?

(d) What is its kinetic energy at the later time?

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