A car moving in a straight line starts at  𝑥 = 0 x=0 at  𝑡 = 0 t=0. It passes:  Point  𝑥 = 29.0   m x=29.0m with speed  11.5   m/s 11.5m/s at  𝑡 = 3.00   s t=3.00s  Point  𝑥 = 375   m x=375m with speed  44.0   m/s 44.0m/s at  𝑡 = 20.0   s t=20.0s
Part A  Calculate the average speed of a complete round trip in which the outgoing 230 km is covered at 98 km/h, followed by a 1.0-h lunch break, and the return 230 km is covered at 60 km/h
 A horse canters away from its trainer in a straight line, moving 50 m away in 9.4 s. It then turns abruptly and gallops halfway back in 1.7 s.
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