# The velocity of a snail changes from stationary to 0.01m/s in 5 seconds. The mass of this snail is 0.05kg. Calculate the acceleration of the force produced by this snail? A 10^-2N B 10^-3N C 10^-4N D 10^-5N

## Using F=ma still doesnt get the answers...

May 21, 2017

C

#### Explanation:

First we need to calculate the acceleration $a$ of snail.

Using the following kinematic expression

$v = u + a t$ ..........(1)
where $v$ is the final velocity after time $t$ and $u$ is the initial velocity.

Inserting given vales we get
$0.01 = 0 + a \times 5$
$\implies a = \frac{0.01}{5} = 0.002 {\text{ ms}}^{-} 2$

Now using the following expression to calculate force

$F = m a$

we get
$F = 0.05 \times 0.002 = 0.0001 = {10}^{-} 4 \text{ N}$