I need help with a physic problem?

R

Ryan

New member
Two forces, 384 N at 15⁰ and 276 N at 32⁰ are applied to a car in an effort to accelerate it. a) Find the resultant of these two forces.
Answer in units of N. b) Find the direction of the resultant force
(in relation to forward, with counterclock-wise considered positive, with
−180⁰ < θ < +180⁰). Answer in units of degrees. Assume: There is no friction. c) If the car has a mass of 3800 kg, what acceleration does it have? Answer in units of m/s2.
 
F1x = 384*cos15º F1y = 384*sin15º
F2x = 276*cos32º F2y = 276*sin32º

Resultant magnitude F3 = √[(F1x + F2x)² + (F1y + F2y)²]
Direction of resultant = arctan[(F1y + F2y)/(F1x + F2x)]

If the car is on the ground and the ground is the x-axis, then only the x-component of the resultant accelerates the car

a = (F1x + F2x)/m
 
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