A 30 kg object has 3 forces acting on it - one 40 N force to the right, one 20 N force to the right, and one 30 N force to the left. What is the acceleration of the object?
F = ma
so get the resultant F and plug it in with m to find a.
To find the acceleration of the object, we can use Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass.
The net force acting on the object is the sum of all the individual forces. In this case, we have a 40 N force to the right, a 20 N force to the right, and a 30 N force to the left. Since the forces to the right are positive and the force to the left is negative, we can calculate the net force as follows:
Net force = (40 N + 20 N) - 30 N = 30 N
Now that we have the net force, we can calculate the acceleration using Newton's second law:
F = ma
Rearranging the equation, we have:
a = F / m
Substituting the values, we get:
a = 30 N / 30 kg = 1 m/s²
Therefore, the acceleration of the object is 1 m/s².