Physics college

A particle is thrown from the origin of the frame xOy at the moment t = 0, with speed v0 at a certain angle b from the Ox axis. At the same moment another particle begins to fall freely from a wall with height h, situated at the distance d. Air resistance is neglected. Find the angle b for the two bodies to meet. What condition must satisfy the initial speed v0 ?

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  1. a car starts from rest and travels with a constant acceleration at a distance of 500 meters. find its velocity at after 30 secs.express your answer in miles/hr in scientific notation

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