Initial Velocity from Displacement Equation – Rankers Physics

Calculus Based Questions: Practice Problem & Solution

The displacement \(s\) of a point moving in a straight line is given by : \(s = 8t^2 + 3t - 5\) where \(s\) is in cm and \(t\) in s. The initial velocity of the particle is :
3 cm/s
16 cm/s
19 cm/s
Zero

Solution Explained:

To solve this problem, we apply the core principles of Calculus Based Questions. Understanding the underlying formula is key to arriving at the correct answer below:

Velocity is given by differentiating displacement with respect to time: \(v = \frac{ds}{dt} = 16t + 3\). For initial velocity, substitute \(t = 0\), which gives \(v = 3\text{ cm/s}\).

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