Moving along the highway, the car accelerated for 20 s on the path of 200 m, then for 50 s it moved uniformly
| March 23, 2021 | education
Moving along the highway, the car accelerated for 20 s on the path of 200 m, then for 50 s it moved uniformly and drove 1 km, then braked sharply and reduced the speed to zero on the path of 50 m in 5 s. What is the average vehicle speed?
Decision:
so total = 200 + 1000 + 50 = 1250 m
total = 20 + 50 + 5 = 75 s
vcp = 1250/75 = 16.67 m / s
Answer: 16.67 m / s
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