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3 years ago

14

A hedgehog runs 500 meters in 10 minutes, then 300 meters in 8 minutes and finally 100 meters in 6 minutes. What is the hedgehog

's average speed in meters per minutes?

1 answer:

Marina86 [1]3 years ago

5 0

200 meters per minutes

500 meters -300 meters= 200 meters

300 meters -100 meters =200 meters

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11111nata11111 [884]

Answer:15.20 m

Explanation:

Given

initial velocity $(v_i)=15 m/s$

inclined length=10 m

$\mu _k=0.435$

inclination $\theta =43.5^{\circ}$

$F_{net}=f_r+mg\sin \theta$

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$a_{net}=0.435\times 9.8\times \cos 43.5+9.8\times \sin 43.5$

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$h_{max}=\frac{u^2\sin^2\theta }{2g}$

$h_{max}=\frac{(5.31)^2\sin ^2(43.5)}{2\times 9.81}$

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