Question

If a 5.0 kg box is pulled simultaneously by a 10.0 N force and a 5.0 N force, then its acceleration must be?

Answer 1

For this case we have that by definition:

$F = ma$

Where,

• m: mass of the object
• a: acceleration of the object
• F: summation of forces

We have then:

$F = 10 + 5\\F = 15 N$

Then, by clearing the acceleration we have:

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

Substituting values we have:

$a = \frac {15} {5}\\a = 3 \frac {m} {s ^ 2}$

Answer:

The acceleration of the box is equal to:

$a = 3 \frac {m} {s ^ 2}$