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Day 14 11-9-10

A. t. This graph shows CONSTANT ACCELERATION. The object must be speeding up or slowing down. Day 14 11-9-10. Topic: Acceleration Formula Objective: I will solve problems with proper formula and template. Science Starter: What would the X-t graph of this A-t graph look like?. x.

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Day 14 11-9-10

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  1. A t This graph shows CONSTANT ACCELERATION. The object must be speeding up or slowing down Day 14 11-9-10 Topic: Acceleration Formula Objective: I will solve problems with proper formula and template. Science Starter: What would the X-t graph of this A-t graph look like? x t

  2. m s s mi hr s km hr hr m s2 Acceleration • Formula used to calculate acceleration • Delta means “change in” • Units are length/time squared EX:

  3. Explaining the f and the i • The f stands for “final” or the ending velocity • f = final velocity • The i stands for the “initial” or starting velocity • i= initial velocity

  4. Acceleration Triangle(reference section) COVER what You are looking for ΔV Change in Velocity A T Acceleration Time

  5. Looking for: Solution: Given: Formula: 1. A parachute on a racing dragster opens and changes the speed of the car from 65 m/sec to 35 m/sec in aperiod of 2.5 seconds. What is the acceleration of the dragster?

  6. Looking for: Solution: Given: Formula: 2. The cheetah, which is the fastestland mammal, can accelerate from 0.0 mi/hr to 50.0 mi/hr in 2.5 seconds. What is the acceleration of the cheetah? Give your answer in units of mph/sec.

  7. Looking for: Solution: Given: Formula: 3. The Ford Edge sports car can accelerate from 0.0 km/hr to 75.6 km/hr in 3.0 seconds. What is the acceleration of this car? Give your answer in units of kilometers per hour/sec.

  8. Looking for: Solution: Given: Formula: 4. Which has greater acceleration, the cheetah or the Ford Edge? (To figure this out, you must remember that there are 1.6 kilometers in 1 mile.) Be sure to show your calculations. 4. Which has greater acceleration, the cheetah or the Lamborghini Diablo? (To figure this out, you must remember that there are 1.6 kilometers in 1 mile.) Be sure to show your calculations.

  9. Looking for: Solution: Given: Formula: Challenge (multi step)1.If a car can go from 0.0 to 60.0 mi/hr in 8.0 seconds, what would be its final speed after 5.0 seconds if its starting speed were 50.0 mi/hr?

  10. Looking for: Solution: Given: Formula: 2. A cart rolling down an incline for 5.0 seconds has an acceleration of 4.0 m/sec2. If the cart has a beginning speed of 2.0 m/sec, what is its final speed?

  11. #1 A C C E L E R A T I O N a = Vf – Vi t t = Vf-Vi a Vf = Vi + at Vi = Vf - at #2 PUT IN REFERENCE SECTION #3 #4

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