Entries by Grace Wahito

A person who normally weighs 250 pounds is standing on a scale inside an elevator.

A person who normally weighs 250 pounds is standing on a scale inside an elevator. The elevator is moving upward with a speed of 7 m/s and then begins to decelerate at a rate of 5 m/s2(0.5 g). What is the reading on the scale before the elevator begins to decelerate? What is the reading […]

 

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A rifle is aimed horizontally at a target 46 m away. The bullet hits the target 2.5 cm

A rifle is aimed horizontally at a target 46 m away. The bullet hits the target 2.5 cm below the aim point. Part A What was the bullet’s flight time? Neglect the air resistance.  t =      Part B What was the bullet’s speed as it left the barrel?   Looking for a Similar Assignment? […]

 

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Problem 3.66Small-plane pilots regularly compete in “message drop”

Problem 3.66Small-plane pilots regularly compete in “message drop” competitions, dropping heavy weights (for which air resistance can be ignored) from their low-flying planes and scoring points for having the weights land close to a target. A plane 75 m  above the ground is flying directly toward a target at  48 m/s . Part A At […]

 

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