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Acceleration Worksheet 1.While traveling along the highway a driver slows down from 24 m/s to 15m/s in 12 seconds. What is the automobiles acceleration? • G = Vf Vi T U= A • Equation: Vf - Vi = A • T • 15-24 = -0.75 m/s/s • 4.5 2.A parachute on a racing dragster opens and changes the speed of the car from 85 m/s to 45m/s in a period of 4.5 sec. What is the acceleration of the dragster? • G = Vf Vi T U=A • Equation • Vf - Vi = A • T • 85-45 = 8.89 m/s/s • 4.5 3.The table below shows data for a ball rolling downhill. Fill in the missing data and then determine the acceleration of the rolling ball. Time (seconds) Speed (km/hr) 0 0 2 3 4 6 6 9 8 12 10 15 Every 2 seconds the ball goes 3km/hr faster Every 1 second it goes 1.5 km/hr faster Acceleration is 1.5 km/hr/sec 4. A car traveling at a speed of 30.0 m/s encounters an emergency and comes to a complete stop How much time will it take the car to stop if it decelerates at -4m/s/s? • G = Vi Vf A U= T • Equation • Vf - Vi = A • T • 0-30 = 7.5 sec • -4 5.If a car can go from 0 to 60 mi/hr in 8.0 sec, what would be its final velocity after 5.0 sec starting from 50mi/hr. • ***BONUS *** 2 part • Part 2 problem Part one • G = A Vi T • G = Vi Vf T • U = Vf • U=A • Equation • Equation • Vf –Vi = AT • Vf - Vi = A • Vf - 50 = 7.5 • 5 • T • Vf = 37.5 + 50 = 87.5 mi/hr • 60-0 = 7.5 mi/hr/s • 8 6.A cart rolling down an incline for 5 seconds has an acceleration of 4.0 m/s/s. If the cart has a beginning speed of 2.0 m/s, what is its final speed? • G = T A Vi • U = Vf • Equation • Vf - Vi = A T • Vf – 2 = 4 • 5 • Vf = 20 + 2 = 22m/s 7.A helicopter’s speed increases from 25m/s to 60m/s in 5 sec. What is the acceleration of the helicopter? 8.As she climbs a hill, a cyclist slows down from 25mi/hr to 6 mi/hr in 10 sec. What is her deceleration? • G = Vi Vf T • U= A • Equation • Vf - Vi = A • T • 6-25 = -1.9 mi/hr/sec • 10 9. A motorcycle traveling at 25m/s accelerates at the rate of 7.0 m/s/s for 6.0 sec. What is the final speed of the motorcycle? • G = Vi A T • U = Vf • Equation • Vf - Vi = A T • Vf – 25 = 7.0 • 6.0 • Vf = 42 + 25 = 67m/s 10.A car starting from rest accelerates at the rate of 8.0 m/s/s. What is his final speed at the end of the 4.0 seconds? 11.After traveling for 6.0 seconds, a runner reaches a speed of 10m/s. What is the runner’s acceleration? • G= Vi T Vf • U =A • Equation • Vf - Vi = A • T • 10-0 = 1.67 m/s/s • 6 12. A cyclist accelerates at the rate of 7.0m/s/s. How long will it take the cyclist to reach a speed of 18m/s? 13. A skateboarder traveling at 7.0 m/s rolls to a stop at the top of a ramp in 3.0 seconds. What is the skateboarder’s acceleration? • G= Vi Vf T • U = A • Vf - Vi = A • T • 0-7 = -233m/s/s • 3 7.A helicopter’s speed increases from 25m/s to 60m/s in 5 sec. What is the acceleration of the helicopter? • G = Vi Vf T • U=A • Equation • Vf - Vi = A • T • 60-25 = 7m/s/s • 5 10.A car starting from rest accelerates at the rate of 8.0 m/s/s. What is his final speed at the end of the 4.0 seconds? • G = Vi A T • U = Vf • Equation • Vf - Vi = AT • Vf – 0 = 8•4 • Vf = 32 m/s 12. A cyclist accelerates at the rate of 7.0m/s/s. How long will it take the cyclist to reach a speed of 18m/s? • G= A Vf Vi • U=T • Equation • Vf - Vi = T • A • 18-0 = 2.57 sec • 7

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posted: | 3/31/2013 |

language: | English |

pages: | 17 |

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