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week2-2

# week2-2 - The diagram shows the positions at 0.10-sec...

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The diagram shows the positions at 0.10-sec intervals of a ball moving left to right. Is the ball accelerated? a) Yes. b) No. c) Unable to determine. The ball moves an equal distance during each 0.10-sec interval, so the speed does not change. Thus, the ball is not accelerated.

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Projectile Motion The path that a moving object follows is called its trajectory . An object thrown horizontally is accelerated downward under the influence of gravity. Gravitational acceleration is only vertical, not horizontal. The object’s horizontal velocity is unchanged, if we can neglect air resistance. Projectile motion involves the trajectories and velocities of objects that have been launched, shot, or thrown.
Does this represent a realistic trajectory? a) Yes. b) No. c) Maybe. Will The coyote go straight horizontally, pause, and then fall straight down?

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