What happens to the acceleration when the velocity is zero
1 answer:
<h2>Answer:</h2>
It's easy to fall into the temptation to say that when the velocity is zero, then the acceleration is also zero. But wait! To answer this question we need to bring out the concept of instantaneous velocity. This type of velocity stands for a specific moment, a specific instant of time, that is, . If so, then acceleration may not be zero when velocity is zero. For example, suppose you throw an object upward, when it is at the top of the travel the instantaneous velocity is zero because it changes from positive to negative value and there is a moment when it must be zero, but yet there is a constant acceleration by the Earth's gravity at that moment. Even though the velocity at that stationary moment is zero, it doesn't imply the acceleration must be zero, so it has a value and in this case is
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Complete Question
The complete question is shown on the first uploaded image
Answer:
a
b
Explanation:
From the question we are told that
The amplitude is
The period is
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at maximum angular acceleration
So
Now is the angular velocity which is mathematically represented as
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substituting values
Generally this test weight is mathematically represented as
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Therefore
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Answer: North of east
Explanation:
Given
Research station is 9.6 km away in North of east
after travelling 3.1 km north of east
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Position vector if had traveled correctly is
Now applying triangle law of vector addition we can get the required vector
Direction is given by