Question

a body changes its velocity from 5m/sec during an accelerated motion of 1m/sec square magnitude and covers a distance of 12 metres in some time.find the velocity at the end of this time?

Answer 1

Answer on Question #38942 - Physics - Other

1. A body changes its velocity from $5\mathrm{m / sec}$ during an accelerated motion of $1\mathrm{m / sec}$ square magnitude and covers a distance of 12 metres in some time. Find the velocity at the end of this time.

Let check the dimension.

$$\left[ v _ {2} \right] = \sqrt {\frac {m}{s ^ {2}} \cdot m + \left(\frac {m}{s}\right) ^ {2}} = \frac {m}{s}.$$

Let evaluate the quantity.

$$v _ {2} = \sqrt {2 \cdot 1 \cdot 1 2 + 5 ^ {2}} = 7 \left(\frac {m}{s}\right).$$

Answer: $7 \frac{m}{s}$ .