jasminekm14

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2.A.8 Acceleration

Starting from rest at the ground floor, an elevator takes 19.0 seconds for a vertical trip of 70.0 meters. It begins its journey with 4.50 seconds of constant acceleration, then moves for 9.00 seconds at constant velocity, and finally, moves for 5.50 seconds read more ..

jasminekm14 Jul 5, 2016

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2.18.6 Motion equations for constant acceleration

Two spacecraft are 13,500 m apart and moving directly toward each other. The first spacecraft has velocity 525 m/s and accelerates at a constant −15.5 m/s2. They want to dock, which means they have to arrive at the same position at the same read more ..

ElectricPavlov ●

jasminekm14 Jul 4, 2016

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average acceleration

A baseball is moving at a speed of 40.0 m/s toward a baseball player, who swings his bat at it. The ball stays in contact with the bat for 5.00×10−4 seconds, then moves in essentially the opposite direction at a speed of 45.0 m/s. What is the magnitude read more ..

jasminekm14 Jul 4, 2016

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962

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displacement

A strange number line is measured in meters to the left of the origin, and in kilometers to the right of the origin. An object moves from −2200 m to 3.1 km. Find its displacement (a) in kilometers, and (b) in meters.

jasminekm14 Jul 4, 2016