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2 years ago

6

Thomas the Tank Engine (a train) is going 80 m/s and slows down to 30 m/s over a period of 30s. What is his deceleration? Accele

ration= (final velocity-initial velocity)/ time A. -1.67 m/s/s B. 0.67 m/s/s C. -50 m/s/s D. 50 m/s/s

1 answer:

sleet_krkn [62]2 years ago

7 0

Answer: D

Explanation:

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The free body diagram of the question is shown on the first uploaded image From the question we are told that

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$\sum F_y = 0$

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So $Tan \theta = \frac{opp}{adj}$

$\theta = tan^{-1} [\frac{opp}{adj} ]$

$= tan^{-1} [\frac{1}{7}]$

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