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Zina [86]
3 years ago
9

A 878-kg (1940 lb) dragster, starting from rest, attains a speed of 25.9 m/s (57.9 mph) in 0.62 s. (a) Find the average accelera

tion of the dragster during this time interval?
Physics
1 answer:
salantis [7]3 years ago
7 0

Answer:

41.8m/s^2

Explanation:

Since the dragster starts from rest, initial velocity (u) = 0m/s, final velocity (v) = 25.9m/s, time (t) = 0.62s

From the equations of motion, v = u + at

a = (v - u)/t = (25.9 - 0)/0.62 = 25.9/0.62 = 41.8m/s^2

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1.63366

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For a demonstration, a professor uses a razor blade to cut a thin slit in a piece of aluminum foil. When she shines a laser poin
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Answer:

width of slit(a)≅ 0.1mm

Explanation:

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a=0.0000941875m

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5 0
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You throw a ball downward from a window at a speed of 2.0m/s. How far has it fallen in 3 seconds?
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Let's just assume that you throw the ball with an initial speed of 2 m/s instead of dropping it like free falling.
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d= (2)(3) + (1/2)(9.81)(9)
d=50.145 m
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3 years ago
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