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Q. Recently we were padding on a boat in a sea. Surprisingly we saw gleaming points in the water during padding. Would you explain about this?

Q. Besides its weight, a 4.00 kg object is subjected to one other constant force. The object starts from rest and in 1.20 s experiences a displacement of (5.20 - 3.30) m, where the direction of is the upward vertical direction. Determine the other force.

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