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Projectile Review

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Quantity that has both magnitude and direction: A.Scalar B.Directrix C.Pointer D.Vector

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The horizontal and vertical parts of a diagonal vector. A.Resultants B.Components C.Cosecants D.Hypotenuses

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The path of a projectile is called its: A.Trail B.Trajectory C.Route D.Projection

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The trajectory of a launched projectile is a A.Straight line B.Hyperbola C.Parabola D.Circular arc

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Acceleration describes: A.How fast something is moving B.How fast something is moving and in what direction C.How quickly the velocity is changing D.How quickly the position is changing

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If air resistance is negligible the acceleration of an object in free fall (on Earth) ______ A.Depends on how heavy it is B.Is 9.8 m/s2 upward if the object is moving up and 9.8 m/s2 downward if the object is moving down. C.Is 9.8 m/s2 down regardless of the direction the object is moving.

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Speed a dropped object will be traveling 3 seconds later is most nearly: A.10 m/s B.15 m/s C.25 m/s D.30 m/s

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A ball is thrown straight up. At its highest point its velocity is ____ and its acceleration is _____ A.0, 0 B.0, 10 m/s 2 down C.10 m/s, 0 D.10 m/s, 10 m/s 2 up

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If an object is thrown straight upward at 23 m/s what is its velocity 2.0 seconds later A.About 10 m/s up B.About 10 m/s down C.About 3 m/s up D.About 3 m/s down

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A ball thrown straight upward takes approximately 2 seconds to reach its highest point. At what speed was it thrown? A.5 m/s B.10 m/s C.20 m/s D.30 m/s E.40 m/s

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A ball that is thrown straight up at 30 m/s reaches a maximum height of 1.10 m 2.30 m 3.45 m 4.90 m

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A ball is thrown straight upward at 20 m/s. It returns to where it was thrown in about: A.1.0 s B.2.0 s C.3.0 s D.4.0 s

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The horizontal acceleration of a projectile on earth. A.+9.8 m/s 2 B.-9.8 m/s 2 C.0.0 m/s 2 D.-32 ft/s 2

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A projectile is launched horizontally from a cliff at 40 m/s. Three seconds later the horizontal component of its velocity is: A.10 m/s B.30 m/s C.40 m/s D.50 m/s

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A projectile is launched horizontally from a cliff at 40 m/s. Three seconds later the vertical component of its velocity is about: A.10 m/s B.30 m/s C.40 m/s D.50 m/s

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A projectile is launched horizontally from a cliff at 40 m/s. Three seconds later its speed is: A.10 m/s B.30 m/s C.40 m/s D.50 m/s

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A projectile is launched at 20 m/s at an angle of 30 o above horizontal. The horizontal component of its initial velocity is: A.20 m/s B.10 m/s C.17.3 m/s D.19.6 m/s

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A projectile is launched at 20 m/s at an angle of 30 o above horizontal. The vertical component of its initial velocity is: A.10 m/s B.20 m/s C.17.3 m/s D.9.8 m/s

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A projectile is launched at 20 m/s at an angle of 30 o above horizontal. At its highest point the total velocity is ____ and the acceleration is _____. A.20 m/s 9.8 m/s/s B.0.0 m/s 9.8 m/s/s C.10 m/s 0 m/s/s D.17.3 m/s 0 m/s/s E.17.3 m/s 9.8 m/s/s

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A projectile is launched at 20 m/s at an angle of 30 o above horizontal. The amount of time it remains airborne is about. A.1.0 seconds B.2.0 seconds C.4.0 seconds D.6.0 seconds

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A projectile launched at 20 m/s at an angle of 30 o lands on a level surface. How far away does it land? A.40 meters B.20 meters C.34 meters D.9.8 meters E.17 meters

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