ACCELERATION.pptx
- 1. ACCELERATION Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity.
- 2. ACCELERATION An object is accelerating if it is changing its velocity. Since velocity is a speed and a direction, there are only two ways for an object to accelerate: change the speed or change direction or change b If an object is speeding up, then it is accelerating and has a positive acceleration. If it is slowing down, it is also accelerating (or decelerating) and has a negative acceleration. A negative acceleration is referred as deceleration.
- 3. ACCELERATION An object moving at a constant speed but rounding a curve or corner is accelerating, too. Although its speed remains the same, its direction changes when it rounds a curve or corner. Hence, the velocity of the object changes.
- 4. ACCELERATION
- 5. ACCELERATION
- 6. ACCELERATION
- 7. ACCELERATION ACTIVITY 1 1. A car starts from rest and attains a speed of 40 km/h in 20 seconds. What is its acceleration in km/h/s? 2. A cyclist going up the Kawakawa Hill at a speed of 5 m/s slows down to 1 m/s in 8 seconds. Find his acceleration.
- 8. ASSIGNMENT 1. Which will have a higher speed after a minute of travel starting from rest a car accelerating at 2 m/s2 or a bus accelerating at 5 m/s2? 2. Give concrete examples of accelerating objects that can be seen in the following places: a. on the road b. at an amusement park
- 9. ASSIGNMENT