View Available Hint(s) Learning Goal To practice Problem-Solving Strategy 5.2 Ne
ID: 1872330 • Letter: V
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View Available Hint(s) Learning Goal To practice Problem-Solving Strategy 5.2 Newton's Second Law: Dynamics of Particles. Previous Answers You want to move a heavy box with mass 30.0 kg across a carpeted floor. You pull hard on one of the edges of the box at an angle 30 above the horizontal with a force of magnitude 240 N, causing the box to move horizontally. The force of friction between the moving box and the floor has magnitude 41.5 N. What is the box's acceleration just after it begins to move? All attempts used; correct answer displayed EVALUATE your answer Part D Figure 1 of 1 A normal walking speed is around 2.0 m/s. How much time t does it take the box to reach this speed if it has the acceleration 5.54 m/s2 that you calculated above? Express your answer in seconds to two significant figures. t= Submit Provide Feedback Next>Explanation / Answer
D)Using equation of motion.
v=u+a*t
Where u is initial speed
v is final speed
a is acceleration
t is time
v=0+5.54*t=2
t=2÷5.54=0.361 sec
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