Question

At this instant, can you say what the velocity of the bear is?.

Answer 1

No

10 m/s² towards the left

Taking right side as positive

$F_{net} =15-17=-2$ $N$

$F=ma$

⇒ $a=\frac{F}{m}$

⇒ $a =\frac{-2}{0.2}$

⇒ $a=-10$ $m/s^2$

The acceleration is 10 m/s² towards the left.

$v=u+at$

$s=ut+\frac{1}{2} at^{2}$

$u^{2} -u^{2} -2as$

From the three equations of motion it can be seen that in order to find velocity either time or displacement is required. Hence, the velocity cannot be found.

sure hope this helps :)