Question

A 1100-kg car pulls a boat on a trailer. (Enter the magnitude.) (a) What total force (in N) resists the motion of the car, boat, and trailer, if the car exerts a 1860-N force on the road and produces an acceleration of 0.600 m/s2

Answer 1

Answer:

780 N  

Explanation:

The combined mass of boat and trailer is, m= 700 kg.

Force applied by car, F= 1860 N

acceleration produced on the total system, a = 0.600 m/s²

Apply Newton's second law:

$F-F_r=m_na$

$m_n=700+1100 =1800 kg$

Substitute the values:

$1860-F_r=1800\times0.6\\F_r=780 N$