A car increases its speed from 20 km/h to 50 km/h in 10 seconds. Its acceleration is _______ .
A. 30 m/s2
B. 3 m/s2
C. 18 m/s2
D. 0.83 m/s2.
Answer:D
A car increases its speed from 20 km/h to 50 km/h in 10 seconds. Its acceleration is _______ .
A. 30 m/s2 B. 3 m/s2 C. 18 m/s2 D. 0.83 m/s2.