Acceleration is a rate that describe motion. Problem solving presented.

1. ACCELERATION Is generally defined as the time rate of change of velocity In EQUATION:

2. PROBLEM SOLVING: Show your solution. 1. A bus can go from rest to 90 km/h in 10 s. What is its acceleration? Given: v i = 0 t i = 0 v f = 90 km/h t f = 10 s Find: a = ? Solution: or a = 9 km/h/s

3. 2. In a motorcycle’s speedometer registers 60km/h, suddenly it stop after 5 s. What is its acceleration? Given: v i = 60 km/h t i = 0 v f = 0 t f = 5 s Find: a = ? Solution: or a = -12 km/h/s

4. 3. What is the acceleration of an airplane that maintains a constant velocity of 300 km/h for 10 s? How about for 1h? How about if it already landed? Defend your answer .  Given: v i = 300 km/h t i = 0 v f = 300 km/h t f = 10 s Find: a = ? Solution: a = 0

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