The distance travelled by an object in time t is given by s = (2.5)t². The instantaneous speed of the object at t = 5 s will be: (a) 5 ms⁻¹ (b) 12.5 ms⁻¹ (c) 62.5 ms⁻¹ (d) 25 ms⁻¹

Answer: (d). v = ds/dt = 2 × 2.5 t = 5t At t = 5 s: v = 25 m/s So the answer is (d) 25 ms⁻¹.

The distance travelled by an object in time t is given by s =… | JEE Main 2023 (13 Apr, Shift 2)

Q19JEE Main 2023 · 13 APR · SHIFT 2Easy

Velocity, Acceleration & Variable Motion

The distance travelled by an object in time $t$ is given by $s = (2.5)t^2$ . The instantaneous speed of the object at $t = 5\text{ s}$ will be:

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Answer: (d)

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