Using Newton's second law, the force of friction that slowed him down is 343.35 N.
What is friction?
Friction is the force that opposes the relative motion of an object over another at their surface of contact.
The frictional force that stops the boy is F = mg
where m = 35 kg, a = 9.81 m/s²
F = 35 x 9.81 = 343.35 N
In conclusion, the frictional force that slow the boy down is 343.35 N
Learn more friction force at: https://brainly.com/question/24338873
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