RECTILINEAR MOTION

Races are timed to an accuracy of 1/1000 of a second. What distance could a * person rollerblading at a speed of 8.5m/s attain in that period of time? O 85 cm O 8.5 m O 8.5 mm O 85 mm On distance-time graph, a straight line sloping upward to the right corresponds * to motion at O increasing speed O constant speed O decreasing speed O zero speedA car that travels 40 mi/hr in 2 hrs, at 50 mi/hr for 1 hr, and at 20 mi/hr for 0.5 hr * has an average speed of O 40 mi/hr O 55 mi/hr O 45 mi/hr 31.4 mi/hr A bicycle travels 12 km in 40 min. Its average speed is * 0.3 km/hr O 48 km/hr O 18 km/hr 8 km/hr An arrow is shot straight up in the air at an initial speed of 15 m/s. After how much time is the is the arrow heading downward at a speed of 8 m/'s? 1.24 5 1.87 5 0.714 S 2.35 s