A bungee jumper has a mass of 74.3 kg and falls a distance of 113 m before the bungee catches and sends the jumper upwards. 1. Assuming the jumper starts from rest, find their total mechanical energy.
2. Assuming energy is conserved, find the speed of the jumper just before the bungee catches.
3. After the bungee catches, the jumper returns to a maximum height of 98.3 m. How efficient is the bungee in returning the stored energy to the jumper?

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