## Questions 11-12 An object moving in a straight line has a velocity v in meters per…

PHYSICS · Single correct · ISC · Physics · Kinematics · Kinematics

Problem

## Questions 11-12 An object moving in a straight line has a velocity v in meters per second that varies with time t in seconds according to the following function. v=4+0.5t2\mathbf{v}=\mathbf{4}+\mathbf{0 . 5} \mathbf{t}^{\mathbf{2}} 11 The instantaneous acceleration of the object at t=2t=2 seconds is (A) 2 m/s22 \mathrm{~m} / \mathrm{s}^{2} (B) 4 m/s24 \mathrm{~m} / \mathrm{s}^{2} (C) 5 m/s25 \mathrm{~m} / \mathrm{s}^{2} (D) 6 m/s26 \mathrm{~m} / \mathrm{s}^{2} (E) 8 m/s28 \mathrm{~m} / \mathrm{s}^{2}

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