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Q. A high-speed photograph of a club hitting a golf ball. The club was in contact with a ball, initially at rest, for about 0.0028 s. If the ball has a mass of 55 g and leaves the head of the club with a speed of 1.8 102 ft/s, find the average force exerted on the ball by the club.

Q. A candle is placed 12.0 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, the image moves 8.5 cm farther away from the mirror. Find the focal length of the convex mirror.

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Category:- Physics
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