Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. See our User Agreement and Privacy Policy.

Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. See our Privacy Policy and User Agreement for details.

Like this presentation? Why not share!

- Development of Malaysian Affordable... by funkseoul 528 views
- Design & Development of Three Rolle... by Auricle Technolog... 381 views
- Universal CNC Milling Machine by RTK Industries 1117 views
- Bending machine project by Mohammad Karim 6825 views
- Universal testing machines by Shivam Tiwari 16681 views
- Design and fabrication of bending m... by paramesr2020 26489 views

637 views

Published on

Year 10 Physics unit looking at acceleration.

License: CC Attribution-NonCommercial License

No Downloads

Total views

637

On SlideShare

0

From Embeds

0

Number of Embeds

77

Shares

0

Downloads

0

Comments

0

Likes

1

No embeds

No notes for slide

- 1. OBJECTS IN MOTION. 03. Acceleration. Ian Anderson Saint Ignatius College Geelong
- 2. WHAT IS ACCELERATION? When a car takes off from the traffic lights it will increase its speed until it reaches the speed limit. Acceleration is described as the rate at which speed changes. The quicker the car increases its speed, the greater its acceleration. Source: Sharwood (2006)
- 3. CALCULATING ACCELERATION. Acceleration = the rate of change of speed. Acceleration = πβππππ ππ π ππππ πβππππ ππ π‘πππ = πππππ π ππππ β ππππ‘πππ π ππππ π‘πππ π‘ππππ π = βπ βπ‘ π = (π£ β π’) π‘
- 4. CALCULATING ACCELERATION. Acceleration is measured in units of ο metres per second per second (m/s/s), or ο metres per second squared (m/s2 or ms-2). If an object slows it is decelerating. Deceleration is negative acceleration. Source: http://oneinamillionsophie.blogspot.com.au
- 5. CALCULATING ACCELERATION. In a 100m sprint, Usain Bolt is able to reach a speed of 12 m/s in 6 s. What is his acceleration? Acceleration = πβππππ ππ π ππππ πβππππ ππ π‘πππ = (π£ β π’) π‘ v = 12 m/s u = 0 m/s t = 6 s Source: http://www4.uwsp.edu/physastr/kmenning/Phys203
- 6. CALCULATING ACCELERATION. Acceleration = πβππππ ππ π ππππ πβππππ ππ π‘πππ = (π£ β π’) π‘ v = 12 m/s u = 0 m/s t = 6 s Acceleration = (12 β0) 6 = 2 m/s2 Source: http://www4.uwsp.edu/physastr/kmenning/Phys203
- 7. CALCULATING ACCELERATION. If the speed of a car changed from 0 to 60 km/h in 6 s, what was its acceleration (in km/h/s)? Acceleration = πβππππ ππ π ππππ πβππππ ππ π‘πππ = (π£ β π’) π‘ v = 60 km/h u = 0 km/h t = 6 s Source: http://www.lefrelonvert.com/2010/09/elvis-blu- ray-collection/
- 8. CALCULATING ACCELERATION. Acceleration = πβππππ ππ π ππππ πβππππ ππ π‘πππ = (π£ β π’) π‘ v = 60 km/h u = 0 km/h t = 6 s Acceleration = (60 β 0) 6 = 10 km/h/s Source: http://www.lefrelonvert.com/2010/09/elvis-blu- ray-collection/
- 9. ACCELERATION AND GRAPHS. The gradient of a speed-time graph gives you the rate of acceleration. ο A steep speed-time graph indicates a higher acceleration than a graph with a lesser slope. Source: Rickard et al. (2006)
- 10. ACCELERATION AND GRAPHS. A car accelerates from rest until it reaches 13 m/s after 5 s. It then continues at that speed for 45 s before it approaches a red traffic light. The driver then slows the car down until it stops at the red light 10 s later. Source: Sharwood (2006)
- 11. ACCELERATION AND GRAPHS. What was the carβs acceleration ο in the first 5 s? ο between 5 & 50 s? ο between 50 & 60 s? Source: Sharwood (2006)
- 12. ACCELERATION AND GRAPHS. ο’ The areas under the graph lines tell us the distance travelled by the car in each time period. ο’ The area under the whole graph tells us the distance between the two traffic lights. Source: Sharwood (2006)
- 13. ACCELERATION AND GRAPHS. What was the distance covered by the car ο in the first 5 s? ο between 5 & 50 s? ο between 50 & 60 s? ο for the whole 60 s? Source: Sharwood (2006)
- 14. BIBLIOGRAPHY. Rickard, G., Phillips, G., Ellis, J., Jeffery, F., & Roberson, P. (2006). Science Dimensions 4: Coursebook. Melbourne: Pearson Education Australia. Sharwood, J. (Ed.). (2006). Science Edge 4. Melbourne: Thomson Learning.
- 15. http://SICkScience10.wikispaces.com/

No public clipboards found for this slide

Be the first to comment