A blacksmith cools a 1.2 kg chunk of iron initially at a temperature of 650°C by tricking 15°C water over it. All the water boils away, and the iron ends
up at a temperature of 120°C. How much water did the blacksmith tricke over the iron? Let = 0.47 x 10 kg. ). water = 4.19 x 10 /kg.
*). and L = 2256 x 100/kg

Kiloleter, mega leterhope this !

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

Answertechnician (a) is correct;