   Chapter 4, Problem 61P

Chapter
Section
Textbook Problem

A 1.00 × 103 car is pulling a 300.-kg trailer. Together, the car and trailer have an acceleration of 2.15 m/s2 in the positive x-direction. Neglecting frictional forces on the trailer, determine (a) the net force on the car, (b) the net force on the trailer, (c) the magnitude and direction of the force exerted by the trailer on the car, and (d) the resultant force exerted by the car on the road.

(a)

To determine
The net force on the car.

Explanation

Given Info: Mass of the car is 1.00×103kg . Mass of the trailer is 300 kg. The acceleration is 2.15ms2 .

Formula for the net force on the car is,

(Fnet)car=mca

• a is the acceleration.
• mc is the mass of the car.

Substitute 1.00×103kg for mc and 2

(b)

To determine
The net force on the trailer.

(c)

To determine
The magnitude and direction of the force exerted by the trailer on the car.

(d)

To determine
The resultant force exerted by the car on the road.

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