Four students travelling to a sporting event make a mistake with their directions and end up travelling out of their way. They are able to use a map to get
themselves back on track, but their mistake caused
them to travel 15 km [N] and then 5.3 km [W].
What displacement resulted from their wrong
directions? (2.2)

An airplane flying parallel to the ground undergoes two consecutive displacements. the first is 76 km at 39.8◦ west of north, and the second is 156 km at 59.9◦ east of north. what is the magnitude of the plane’s total displacement? answer in units of km. 020 (part 2 of 2) 10.0

Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?

What property is a characteristic of a substance that can be observed and does not change the identity of the substance