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  • one year ago

Alexander's hobby is dirt biking. On one occasion last weekend, he accelerated from rest to 17.8 m/s/s in 1.56 seconds. He then maintained this speed for 9.47 seconds. Seeing a coyote cross the trail ahead of him, he abruptly stops in 2.79 seconds. Determine Alexander's average speed for this motion.

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  1. IrishBoy123
    • one year ago
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    |dw:1437694184862:dw| if the acceleration/deceleration is constant, you can draw a nice diagram like this and solve it in all manner of ways, including geometrically.

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