Radar tells an air traffic controller that a jet is slowing as it nears the airport. Which might represent the jet's velocity?

A. 700 h/km

B. 700 km

C. 700 km/hr

D. 700 km/h west

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

When an object is heated it contracts. a. true b. false

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.