Arunner taking part in the 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 45 m. if he completes the 200 m dash in 27.6s and runs at constant speed throughout the race, what is the magnitude of his centripetal acceleration (in m/s^2) as he runs the curved portion of the track?

Energy flows from the producer level to the level. is called

In which situation is the acceleration of a car negative? question 5 options: a)the velocity of a car was 75 km/hr over 4 hours. b)the velocity of a car reduced from 50 km/hr over one minute. c)the velocity of a car increased from 40 km.h to 75 km/h over 15 minutes. d)the velocity of a car was 45 km/hr at 2: 00pm and at 4: 00pm its velocity was 85 km/ht.

How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters