sprinter in the 100 m dash accelerates for 1.5 seconds when the starting pistol goes off, before reaching the maximum speed of 9.1 m/s. (Keep in mind the world record for maximum speed is 10.49 seconds) A) What distance does she cover while she accelerates? B) What's her race time

A car starts from rest, then accelerates at 1.20 m/s? for 7.00 s. It hits the brakes, slowing to a stop at a rate of -4.25 m/s². What is the total time for the problem? (Unit = s)

To take off from the ground, an airplane must reach a sufficiently high speed. The velocity required for the takeoff, the takeoff velocity, depends on several factors, including the weight of the aircraft and the wind velocity. A plane accelerates from rest at a constant rate of 5.00 m/s2m/s2 along a runway that is 1800 mm long. Assume that the plane reaches the required takeoff velocity at the end of the runway. What is the time tTOtTO needed to take off? What is the distance d_last traveled by the plane in the last second before taking off?

Speedy Sue, driving at 35.0 m/s, enters a one-lane tunnel. She then observes a slow-moving van 160 m ahead traveling at 5.20 m/s. Sue applies her brakes but can accelerate only at -1.90 m/s because the road is wet. Will there be a collision? O Yes O No If yes, determine how far into the tunnel and at what time the collision occurs. If no, determine the distance of closest approach between Sue's car and the van. (If no, enter "0" for the time.) 160 distance Your response differs from the correct answer by more than 10%. Double check your calculations, m 4.45 time Your response differ from the correct answer by more than 10%. Double check your calculations. s Need Help? Read It