1 / 10

Problems Velocity & Acceleration

Problems Velocity & Acceleration. Physical Science. 1. A car’s velocity changes from 0 m/sec to 30 m/sec 10 seconds later. Calculate the car’s average acceleration. a = velocity final – velocity initial time a= 30 m/sec - 0 m/sec 10 seconds a = 3 m/sec 2.

jessica-jarvis
Télécharger la présentation

Problems Velocity & Acceleration

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Problems Velocity & Acceleration Physical Science

  2. 1. A car’s velocity changes from 0 m/sec to 30 m/sec 10 seconds later. Calculate the car’s average acceleration. a = velocity final – velocity initial time a= 30 m/sec - 0 m/sec 10 seconds a = 3 m/sec2

  3. 2. A roller coaster starts down a hill at 10 m/sec. Three seconds later, speed increased to 32 m/sec. What is the acceleration? a = velocity final – velocity initial time a = 32m/sec – 0 m/sec 3 sec a = 10.7 m/2

  4. 3. A swimmer speeds up from 1.1 m/sec to 1.3 m/sec during the last 20 seconds. What was the acceleration? a = velocity final – velocity initial time a= 1.3 m/sec – 1.1 m/sec 20 sec a = 0.01 m/sec2

  5. 4. A satellite has an initial velocity of 10,000 m/sec. After a minute it is 5000 m/sec. What is the satellite’s acceleration? a = velocity final – velocity initial time a = 5000 m/sec – 10,000 m/sec 60 sec a = - 83.3 m/sec2

  6. Speed and Acc Ch 3 # 1 A car traveled 1025 km from El Paso to Dallas in 13.5 hrs. What was the average velocity? Vave = distance time Vave = 1025 km 13.5 hrs Vave = 75.9 km/hour

  7. 2. A car traveling north with a velocity of 30 m/sec slows down to a velocity of 10 m/s within 10 seconds. What is the car’s acceleration? a = velocity final – velocity initial time a = 10 m/sec – 30 m/sec = -20 m/sec 10 sec 10 sec a = -2 m/sec/sec or 2 m/sec2

  8. 3. If the average speed of a car is 45 km/hr, how far can it travel in 40 min? Vave = distance distance = Vave X time time distance = 45 km/hr X 40/60 minute distance = 30 km

  9. 4. Falling objects drop with an average acc of 9.8 m/sec/sec. If an object falls from a tall building, how long will it take before it reaches a speed of 49 m/sec? a = velocity final – velocity initial time time = velocity final – velocity initial a time = 49 m/sec – 0 m/sec 9.8 m/sec2 Time = 5 seconds

More Related