Suppose you drop a brick from the top of a building that is 250m high. the brick has a mass of 2 kg, and the resistance force fr is given by fr =-40, where u is the velocity in m/s. how long will it take the brick to reach the ground? what is its approximate velocity at that time (use a calculator or computer)? does it reach terminal velocity?

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