Tham KY's answer to Adrian Yip's Secondary 4 A Maths question.

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Tham KY
Tham Ky's answer
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Adrian Yip
Adrian Yip
2 years ago
why is it -4?
Tham KY
Tham KY
2 years ago
Differentiate v gets a, the acceleration.
The power of the denominator is "-2", the 'inside'of the denominator's bracket is 2t, after differentiated both, get -2*2=-4