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Q. No.The position of a particle is given by;
\(\vec{r}=(3.0t\hat{i}-2.0t^{2}\hat{j}+4.0\hat{k})\) m where \(t\) is in seconds and the coefficients have the proper units for \(r\) to be in metres. The magnitude and direction of \(\vec{v}(t)\) at\(t=1.0\) s are:
1. \(4\)m/s,\(53^\circ\) with \(x\)-axis
2. \(4\) m/s, \(37^\circ\) with \(x\)-axis
3. \(5\) m/s,\(53^\circ\) with \(y\)-axis
4. \(5\)m/s, \(53^\circ\) with \(x\)-axis
\(\vec{r}=(3.0t\hat{i}-2.0t^{2}\hat{j}+4.0\hat{k})\) m where \(t\) is in seconds and the coefficients have the proper units for \(r\) to be in metres. The magnitude and direction of \(\vec{v}(t)\) at\(t=1.0\) s are:
1. \(4\)m/s,\(53^\circ\) with \(x\)-axis
2. \(4\) m/s, \(37^\circ\) with \(x\)-axis
3. \(5\) m/s,\(53^\circ\) with \(y\)-axis
4. \(5\)m/s, \(53^\circ\) with \(x\)-axis
Subtopic: Â Speed & Velocity |
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