In order to prevent muscle contraction from mis-aligning bones during healing, broken legs must be supported horizontally and kept under tension (traction) directed along the leg. If the leg weighs [w] N, what must be the weight of the hanging mass ? The supporting wires make an angle of 30 degrees with respect to the floor.     

The slope of the graph below has a value close to    A) 1.8 ms2;  B) 2.4 ms2; C) 0.5 ms2; D) 4.7 ms2;

With all other factors equal, if you double the unbalanced force on an object of a given mass the acceleration will beA) doubled.B) increased fourfold.C) increased by one-half.D) increased by one-forth.

How many meters away is a cliff if an echo is heard one-half second after the original sound ? Assume that sound travels at 343.0ms. HINT: v=dt Solve for distance; What do we mean by the echo being heard one-half second after the original sound ? A) 86. meters; B)  860. meters; C)  8.6 meters; D) 8600 meters;

An objects ____ determines the extent of resistance to a change of motion.A) weightB) densityC) massD) Any of these.

In order to prevent muscle contraction from mis-aligning bones during healing, broken legs must be supported horizontally and kept under tension (traction) directed along the leg. If the leg weighs [w] N, what traction force does this hanging weight produce upon the leg ? The supporting wires make an angle of 30 degrees with respect to the floor. Hint 1: Tension in the wires is equal to the hanging weight. Hint 2 : Which component of the weight/tension contributes to the traction of the leg ? Hint 3: Forcealong the leg=2⋅Weight⋅cosθ

What feature of motion is described by acceleration?A) The rate at which speed changes.B) How quickly final velocity is reached.

How are the Roman and Byzantine Empires related?

Why is the image of the she-wolf so iconic in Roman history?

Each of the Seven Kings of Rome is credited with _________________.