The picture above shows a football player kicking a football. this is known as two dimensional motion. in which direction does the football move? a) vertical only (y) b) horizontal only (x) c) horizontal and vertical (x, y) d) horizontal, vertical, and side to side (x, y, and z) the diagram shows the motion of a tennis ball that has just been hit with a racket (air resistance is neglected). which of these is true of the horizontal and vertical components of the ball’s velocity? a) both the horizontal and the vertical components are constant. b) both the horizontal and the vertical components are accelerated. c) the horizontal component is constant but the vertical component is accelerated. d) the horizontal component is accelerated but the vertical component is constant.
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State one advantage and one disadvantage of using a plane mirrior as a driving mirrior
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At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.
Answers: 1
The picture above shows a football player kicking a football. this is known as two dimensional motio...
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