The gravitational force exerted on a baseball is 2.21 N down. A pitcher throws the ball horizontally with velocity 18.0 m/s by uniformly accelerating it along a straight horizontal line for a time interval of 170 ms. The ball starts from rest. (a) Through what distance does it move before its release? (b) What are the magnitude and direction of the force the pitcher exerts on the ball?

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Q: In a uniform circular motion, which of the following physical quantity remains constant everywhere…

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A: F=maF =m(dVdt)If a body is moving with constant velocity dVdt=0F =m(0)F =0

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Q: An object moving upward cannot be considered free-falling a.Sometimes true b.Always false…

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: