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3 years ago

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Two cyclists, 50 miles apart, start riding toward each other at the same time. One cycles 4 times as fast as the other, and they

meet after 2 hours of riding. a. Write an equation using the information as it is given above that can be solved to answer this problem. Use the variable r r to represent the speed of the slower cyclist?

1 answer:

Bond [772]3 years ago

3 0

Answer:speed of slower cyclist is 5 mph

Explanation:

Given

Distance between two cyclist is 50 miles

One cycle is 4 times fast as other

Speed of slower cyclist is r miles per hour

speed of faster cyclist is 4 r

they meet after t=2 hr

Distance traveled by fast cyclist is $x=2\times 4r$

Distance traveled by slower cyclist is $y=2\times r$

$x+y=50$

$2\times 4r+2\times r=50$

$8r+2r=50$

$10r=50$

$r=5 mph$

$4 r=20 mph$

speed of slower cyclist is 5 miles per hour

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Answer:

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Explanation:

m = mass attached to the spring = 0.405 kg

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x₀ = initial position = 3.31 cm = 0.0331 m

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Using conservation of energy

Initial kinetic energy + initial spring energy = Final kinetic energy + final spring energy

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v = 0.231 m/s

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Answer:

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Mengingat data berikut;

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Answer:

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$k = 6.06 \times 10^4 N/m$

Part b)

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