An automobile changes speed as shown. Find its acceleration.

7. A dragster starts from rest and reaches a speed of 62.5 m/s in 10.0 s. Find its acceleration (in m/s2).
8. A car accelerates from 25 mi/h to 55 mi/h in 4.5 s. Find its acceleration (in ft/s2).
9. A train accelerates from km/h to km/h in 2 min 15 s. Find its acceleration (inm/s2).

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Speed Change 1. From 0 to 15 m/s 2. From 0 to 18 m/s 3. From 60 ft/s to 70 ft/s 4. From 45 m/s to 65 m/s 5. From 25 km/h to 90 km/h 6. From 10 mi/h to 50 mi/h Time Interval 1.0 s 3.0 s 1.0 s 2.0 s 5.6 s 3.5 s I Find a in m/s in m/s in ft/s2 in m/s in m/s in ft/s