Final answer:
The net force acting on the body can be calculated using Newton's second law of motion (F = ma). First, find the acceleration which is 5 m/s^2. Then, multiply it by the mass of 4 kg to get the net force of 20 Newtons.
Step-by-step explanation:
To solve this problem, let's use the formula of Newton's second law of motion, which states that the force acting on an object is equal to its mass times its acceleration (F = ma). First, we need to find the acceleration. The acceleration is the change in velocity over the change in time. The body increased its speed from 0 m/s to 10 m/s in 2 seconds. Thus, the acceleration would be 10 m/s divided by 2 s, which is 5 m/s2.
Now, let's calculate the net force (F). As per the formula, F = ma, where m is the mass of the body, 4 kg, and a is the acceleration we calculated as 5 m/s2. So, F = 4 kg * 5 m/s2 = 20 Newton. Therefore, the net force acting on the body is 20 Newtons.
Learn more about Newton's second law of motion