A student investigates terminal velocity. She uses a tall glass tube filled with oil.
She drops a metal ball into the tube.
oil
The ball falls through the oil.
glass tube
(5)
(a) Use ideas about forces to explain how a falling object can reach a terminal velocity.

If football was tossed in air without gravity or friction the ball would go into space

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