The Special Olympics raises money through "plane pull" events in which teams of 25 people compete to see who can pull a 74,000 k
g airplane 3.7 m across the tarmac. The inertia of the plane is an issue--but so is the 14,000 N rolling friction force that works against the teams. If a team pulls with a constant force, and thus a constant acceleration, and moves the plane 3.7 m in 6.1 s (an excellent time),a. What force does the team pull with?b. What is the speed of the plane at the end of the pull?c. What fraction of the teamâs work goes to kinetic energy of the plane?
The lungs hold air that is taken in. Oxygen gas noticeable all around moves into the blood. The heart pumps to transports this oxygenated blood to cells in the body that need it to deliver vitality.