Prep. com/modules/test/tq. php?testid=931&strandid=4672&am p;element=&assignment_id=418621 47&load_test=1&teacher Preview=#test 12)
Carl runs around a track in 1.17 minutes. How long would it take him to run 1.5 laps at this rate? [Round to two places.]
A)
1.46 minutes
Eliminate
B)
1.56 minutes
1.66 minutes
D)
1.76 minutes

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?