A sprinter reaches his maximum speed in 2.0 seconds from rest with constant acceleration. He then maintains that speed and finish the 100 yards in the overall time of 9.67 seconds. Determine his maximum speed Vmax- t = 0 -100 yd- t = 2.0 sec t = 9.67 sec
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- An automobile reduces its speed from 70.00 kph to 50.00 kph after covering a distance of 480.00 m. What is the automobiles acceleration in kph2? Write the answer to two decimal places. Indicate the unit.Report 1. From t = 0 to t = 3.44 min, a man stands still, and from t = 3.44 min to t = 6.88 min, he walks briskly in a straight line at a constant speed of 1.94 m/s. What is his average velocity vavg in the time interval 1.00 min to 4.44 min? O a. 1.940 m/s O b. 0.000 m/s O c. 0.970 m/s O d. 0.564 m/sA Nissan Almera travels a minimum time of 53.45 seconds with a totalof 1450m. It starts from rest and stops at his destination. If the acceleration of theAlmera is equal to its deceleration before stopping at a rate of 2.37 ™ 52. determine: a. the maximum velocity (in m/s) b. the total time it travels at maximum velocity
- A sprinter reaches his maximum speed in 2.6 seconds from rest with constant acceleration. He then maintains that speed and finishes the 100 yards in the overall time of 10.23 seconds. Determine his maximum speed Vmax t = 0 100 yd- t = 2.6 sec Answer: Vmax i t = 10.23 sec ft/secA cyclist sprints at the end of a race to clinch a victory. She has an initial velocity of 11.5 m/s and accelerates at a rate of 0.500m/s2 for 7.00 s. (a) What is her final velocity? (b) The cyclist continues at this velocity to the finish. If she is 300 m from the finish line when she starts to accelerate, how much time did she save? (c) The second-place winner was 5.00 m ahead when the winner started to accelerate, but he was unable to accelerate, and traveled at 11.8 m/s until the finish line. What was the difference in finish time in seconds between the winner and runner-up? How far back was the runner-up when the winner crossed the finish line?In a 100-rn race, the winner is timed at 11.2 s. The second-place finisher’s time Is 11.6 s. How far Is the second-place finisher behind the winner when she crosses the finish line? Assume the velocity of each runner is constant throughout the race.
- A car starts from 2.00 m/s and accelerates at 4.00 m/s2 for 6.0 s, it coasts for 5.00 s, and then slows down at a rate of 2.00 m/s2to a stop. How far has it traveled, in meters? Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.B. Solve the problems correctly. Present all solutions. 3. all Upiect ct: 5? 4. The brakes of a car moving at 14 m/s are applied, and the car comes to a stop in 4s. How far does the car go, while it is slowing down from 14 to 10 m/s? 5. The brakes of a car whose initial velocity is 30 m/s are applied, and the car receives an acceleration of -2 m/s². How far will it have gone (a) when its velocity has decreased to 15 m/s and (b) when it comes to a stop? 6. A car starts from rest and accelerates 10 m/s². (a) How far will it travel after 5 seconds? (b) How far will it travel during the sixth second?6. The position of a particle along a straight line is given by s = (1.5r - 13.52 + 22.5t) ft, where t is in seconds. Determine the position of the particle when t = 6 s and the total distance it travels during the 6- s time interval. Hint: Plot the path to determine the total distance traveled. Ans. s=6s = -27.0 ft ; Stot = 10.5 + 48.0+ 10.5 69.0 ft 7. A particle moves along a straight line such that its position is defined by s = ( - 6t + 5) m. Determine
- You are standing on a circular track that is 315 m long. You begin jogging at the start line and keep jogging until you complete one full lap and stop at the same point you started at. - What is the total distance you travel? - What is your final displacement? A world class sprinter ran 200 m in 21.75s. What was her average speed? (m/s)A vehicle drives at a constant speed of 215 km/h for 42.3 seconds, accelerates by 29.4m/s2 for 5.00s, and finally slows down to stop. The entire movement takes 88.6 seconds. B. Determine the maximum speed. C. Determine the total displacement. Two 9.82km separate trains travel on parallel tracks in opposite directions, one to the other. Train A has a speed of 5.87 km/h at departure and accelerates at a rate of 0.29m/s2. Train B has a speed of 20.3m/s at departure and an acceleration of 0.69m/s2. B. Determine when trains meet.3. A plane starting from rest is accelerated uniformly to its take-off speed of 72 m/s during a 5-secondperiod. What is the plane’s acceleration?4. A motorist covers a displacement of -70 km for a period 7 minutes. What is his average velocity inm/s?5. A box falls off the tailgate of a truck and slides along the street for a distance of 62.5 m. Frictiondecelerates the box at 5.0m/s 2. At what speed was the truck moving when the box fell?