How fast will an object with a mass of $7 k g$ $7 kg$ accelerate if a force of $9 N$ $9 N$ is constantly applied to it?

Question

2129 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-04-24T14:50:41

The acceleration is approximately $1, 2857 \frac{m}{s^{2}}$ $1,2857 m/s^2$

In this situation, we can use Newton's second law of motion, which states that force applied to an object is equal to mass times acceleration:

$F = m \cdot a$ $F=m*a$

$N = k g \cdot \frac{m}{s^{2}}$ $N=kg*m/s^2$

The given elements are the mass of the object and the force that is applied:

$F = 9 N = 9 k g \cdot \frac{m}{s^{2}}$ $F=9 N=9 kg*m/s^2$

$M = 7 k g$ $M=7 kg$

Now we can set our equation the way we need it:

$a = \frac{F}{m}$ $a=F/m$

$a = 9 k g \cdot \frac{m}{s^{2}} / 7 k g$ $a=9 kg*m/s^2/7 kg$

$a \approx 1, 2857 \frac{m}{s^{2}}$ $a~~1,2857 m/s^2$

For a more illustrated explanation about Newton's laws you can check this:
http://teachertech.rice.edu/Participants/louviere/Newton/law2.html

How fast will an object with a mass of 7kg7 kg accelerate if a force of 9N9 N is constantly applied to it?