Two identical blocks are pulled along rough horizontal surfaces with the same ki

Question

Two identical blocks are pulled along rough horizontal surfaces with the same kinetic coefficient of friction. Both are pulled at constant speed v. Which system has the larger kinetic friction? Top system with T_1 force bottom system with T_2 force both have the same frictional force need more into. A constant force of 5.6 N in the negative y-direction acts on an object as it moves from the origin to the position r = (-3.21 + 0.89j - 1.0k)m. How much work (in J) is done by the force during this displacement? A rifle is aimed horizontally toward the center of a target 0.10 km away, but the bullet strikes 10 cm below the center. Calculate the initial velocity of the bullet as it leaves the rifle.

Explanation / Answer

First, for horizontal component Voy = 0

Yf = Yo + Voy* t - g*t2/2 ----> -0,10 = 0 + 0*t - 9,81*t2/2 ------> t = 0,142 s

Now, for horizontal component

Xf = Xo + Vox*t + ax*t2/2 -------> 100 = 0 + Vox*(0,142) + 0*t2/2 ------> Vox = Vo = 700 m/s

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.