The net fedrce on a 12 kg cart is 3.2N backward. Ignoring friction, what is the acceleration of the car?
0.27 m/s2
3.8 m/s2
8.2 m/s2
18 m/s2
38m/s2

Mass,m = 12 kg

Force,F = 3.2 N

Calculate the acceleration ( a ) .

We know that,

We are given with the amount of force applied and mass of a cart and we have to find the acceleration of the box.

According to Netwon's 2nd law,

After deriving, we will get that

Plugging the given values to get mass,

➝ 3.2 N = 12 kg × accleration

➝ Accleration = 3.2 / 12 m/s²

➝ Accleration = 0.27 m/s² (approx.)

Thus, the required answer is Option A.

Carry On Learning

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.