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Ronch [10]
3 years ago
15

A car accelerates at 2 m/s2. Assuming the car starts from rest, how much time does it need to accelerate to a speed of 20 m/s? A

. 2 seconds B. 10 seconds C. 20 seconds D. 40 seconds E. none of the above
Physics
2 answers:
Ludmilka [50]3 years ago
8 0
The answer would be 
C) 20 seconds.
mrs_skeptik [129]3 years ago
6 0

Answer: B. 10 seconds

I just took the test and the above answer ^ is 100% correct!


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A body moving with an initial velocity of 30m/s accelerates uniformly at the rate of 10m/s . what is the distance covered during
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Answer:

The distance covered by the body is, S = 800 m

Explanation:

Given data,

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Let the time period of travel be, t = 10 s

Using the II equations of motion,

                       S = ut + ½ at²

Substituting the given values,

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Hence, the distance covered by the body is, S = 800 m

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