Question

physics 1 unit 2 practice test
a 100 kg object is traveling at a constant velocity and experiences a force of friction of -185n.
a. the ( f_{net} ) equation to solve for the applied force is. (your response should only be variables, no data yet! also, do not add spaces between variables.)
b. the applied force needed to maintain the objects speed is n. (your response should be an integer number.)

Explanation:

Step1: Apply Newton's second law

Newton's second law states that \(F_{NET} = ma\). Since the object is moving at a constant velocity (\(a = 0\)), \(F_{NET}=0\). The net force is the sum of the applied force (\(F_A\)) and the frictional force (\(F_F\)), so \(F_{NET}=F_A + F_F\).

Step2: Solve for the applied force

From \(F_{NET}=F_A + F_F\) and \(F_{NET} = 0\) (because \(a = 0\)), we can rearrange the equation to \(F_A=-F_F\). Given \(F_F=- 185N\), substituting the value of \(F_F\) into the equation \(F_A=-F_F\) gives \(F_A = 185N\).

Answer:

a. \(F_{NET}=F_A + F_F\)
b. \(185\)