A student threw a ball horizontally out of a window 9.8 meters above the ground. it was caught by another student who was 10.4 meters away. What was the horizontal velocity of the ball?

Hi, your answer is not correct. this is a cumulative  

This is what a calorimeter is used for simpler ex, to measure calories in food.

Indoraptor for sure

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