The force of friction acting against the object is 2.3 N.
The problem isn't complete. A similar problem is in the attachment. According to Newton's second law, the acceleration of the object depends on the force that acts on the object
∑F = ma
- m = the mass of the object = 3.5 kg
- a = the acceleration = 2.2 m/s²
- F = the force = 10 N
a = F ÷ m = 10 ÷ 3.5 = 2.86 m/s²
The acceleration is different from the info, so there is another force acting on the object. The friction force works in the object if it's on a rough surface. The direction of the friction force is always against the movement of the object.
∑F = ma
F - f = ma
10 - f = 3.5 × 2.2
10 - f = 7.7
f = 10 - 7.7
f = 2.3 N
Learn more about Newton's second law here: https://brainly.com/question/25545050
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