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![]() Mac's speed: 2.5 m/s Tosh's speed: 4.0 m/s Difference: 1.5 m/s Problem 13 Renatta Gas did it again. (Ignore any stationary periods of time.) Then determine how much faster the fastest student moves than the slower student. Use the graph to determine the speeds at which the two students move. 2.0 m/s Problem 12 The position-time graph below represents the motion of two students - Mac (in red) and Tosh (in blue) - as they enter and exit the school library during a passing period. Use the graph to answer the next several questions.Ī. The position-time graph below represents his motion. H walks quickly to the back of the lab, picks up the strobe and returns to the middle of the classroom. Starting 1.0 meter from the front of the room, Mr. He left the strobe on the counter in the back of the lab after the last class period. H is preparing to show the class a Strobe demonstration when he realizes that his absentmindedness has struck once more. What was the average speed of the coach for these 16.0 seconds?Ī. What was the fastest speed which the coach walked during any of the time intervals for the last 16.0 seconds? f. At what time did the coach have the greatest displacement from his starting position? e. Determine the displacement of the coach after 12.0 seconds. Determine the resulting displacement of the coach during these 16 seconds. Determine the total distance walked by the coach during these 16 seconds. Use the graph to answer the next several questions. Problem 10 The position-time graph below represents the motion of South's basketball coach during the last sixteen seconds of overtime during this past weekend's game. Determine the deceleration rate (i.e., acceleration) achieved by such a car. ![]() At high speeds, the aerodynamics of the car help to create a strong downward force which allows the car to brake from 27.8 m/s (100 km/hr or 62.2 mi/hr) to 0 in as small of a distance as 17 meters. (Given: 1.00 m/s = 2.24 mi/hr)Ģ.0 x 105 mi/hr/s (rounded from 202,667 mi/hr/s) 9.0 x 104 m/s/s (rounded from 90,476 m/s/s) Problem 9 A Formula One car is a single-seat racing car with an open cockpit and substantial wings located in the front and rear. Express your answer in both mi/hr/s and in m/s/s. Determine the magnitude of the average acceleration of the ball during the contact with the bat. The actually contact between ball and bat lasted for 0.75 milliseconds. In a recent game, Homer hit a 96 mi/hr sinking curve ball head on, sending it off his bat in the exact opposite direction at 56 mi/hr. Determine the acceleration of this car in both m/s/s and mi/hr/s.Ĩ.18 m/s/s or 18 mi/hr/s Problem 8 Homer Agin leads the Varsity team in home runs. Determine the total distance which Ken ran during his 20 minute jog.ħ100 m (rounded from 7088 m) Problem 7 The Lamborghini Murcielago can accelerate from 0 to 27.8 m/s (100 km/hr or 62.2 mi/hr) in a time of 3.40 seconds. Ken then averaged a speed of 6.10 m/s for 7.1 minutes. During a recent morning run, Ken averaged a speed of 5.8 m/s for 12.9 minutes. 10.7 m Problem 6 Ken Runfast is the star of the cross-country team. Use your initial speed and the calculated time to determine the average speed and the distance which the puck travels before stopping.Ī. Determine the time it takes the puck to slow to a stop. Once leaving her stick, the puck slows down at a rate of -4.06 m/s/s.Ī. Determine the time for Al to run from the line of scrimmage to the end zone.ħ.5 s Problem 5 During the annual shuffleboard competition, Renee gives her puck an initial speed of 9.32 m/s. He averaged 9.8 m/s for an 80-yard (73 m) score. 0 yd/s Problem 4 In last week's Homecoming victory, Al Konfurance, the star halfback of South's football team, broke a tackle at the line of scrimmage and darted upfield untouched. Determine Dugan's average velocity for the entire race.Ī. Determine Dugan's average speed for the first 25.00 yd leg of the race. Determine Dugan's average speed for the entire race. ![]() Dugan finished the return leg (25.00 yd distance) in 10.22 seconds. ![]() GIVEN: (1.000 mi =1609 m)Ģ02.8 mi/hr or 90.66 m/s Problem 3 In the qualifying round of the 50-yd freestyle in the sectional swimming championship, Dugan got an early lead by finishing the first 25.00 yd in 10.01 seconds. Determine the average speed of the dragster in mi/hr and m/s. Determine Usain's average speed for the race.ġ0.3 m/s Problem 2 In the Funny Car competition at the Joliet Speedway in Joliet, Illinois in October of 2004, John Force complete the ¼-mile dragster race in a record time of 4.437 seconds. Problem 1 In the 2008 Olympics, Jamaican sprinter Usain Bolt shocked the world as he ran the 100-meter dash in 9.69 seconds.
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