Question

Amelia is participating in a 60-mile spin-a-thin. Her spin bike keeps track of the stimulated number of miles she travels. She plans to take a 15-minute break within 5 miles of 30 miles.

How is the number of miles Amelia spins before she takes a break related to the amount of time before she takes a break?

Answer 1

Pulling her arms and legs in increases Amelia's rate of spin because of the conservation of angular momentum.

Step-by-step explanation:

Amelia's number of miles spun before she takes a break is related to the amount of time before she takes a break by her angular momentum. When Amelia pulls her arms and legs in, her moment of inertia decreases, which causes her angular velocity to increase, since angular momentum is conserved. This means she spins faster and travels more miles before taking a break.