SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A car starts from rest and after 7 seconds it is moving at 42 m/s. What is the car’s acceleration?
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0.17
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1.67
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6
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7
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Explanation:
Detailed explanation-1: -The final velocity is 42 m/s and time is 7 seconds. = 42 m/s / 7 s = 6 m/s². Therefore, the acceleration of the car is 6 m/s².
Detailed explanation-2: -Hence, the acceleration of car is 0.33 m/s².
Detailed explanation-3: -The acceleration of cars in the United States is stated as a “zero to sixty” time, where vi is zero and vf is 60 miles per hour or 27 meters per second. The average rate of acceleration of all the ordinary cars I found was between 3 and 4 m/s2.
There is 1 question to complete.