An object has a position given by r = [2.0 m + (1.00 m/s)t] i + [3.0 m - (1.00 m/s^2)t^2] j , where quantities are in SI units. What is the speed of the object at time t = 2.00 s? 4.12 m/s 4.95 m/s 5.77 m/s 3.30 m/s 2.47 m/s
Added by Ruth T.
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00 s by taking the derivative of the position vector with respect to time. Velocity vector, v = d/dt [2.0 + (1.00)t] i + [3.0 + (1.00)t] j v = 0 i + 1.00 j = 1.00 j Show more…
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