Question
Repeat Prob. $2 / 148$, but now the speed of the particle $P$ is decreasing at the rate of $20 \mathrm{m} / \mathrm{s}^{2}$ as it moves along the indicated straight path.
Step 1
This is given by the formula $T = \frac{u}{g}$, where $u$ is the initial velocity and $g$ is the acceleration due to gravity. Substituting the given values, we get $T = \frac{100}{10} = 10$ seconds. Show more…
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