A race car makes one lap around a track of radius 50.m in 11.0 s 3.1.1 What is the car's average speed? 3.1.2 What is the car's angular speed? 3.1.3 What is the car's centripet al acceleration?
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- 2. A girl jogs around a horizontal circle with a constant speed. She travels one half of a revolution, a distance of 20.0 m along the circumference of the circle, in 8.00 s. a. What is the radius of the circle in meters? b. What is the period? c. What is her speed? d. What is her radial acceleration is?A 2kg toy is moving in a circle of radius 2.5 m with a speed of 3m/s.Calculate the centripetal acceleration of the toy? choose one correct answer with the correct units. A. 3.6 m/s^2 B. 1.2 m/s^2 C. 3.6 m/s D. 0.833 m/s^2A car driving around a circular track has a centripetal acceleration of 91 m/s291 m/s2 until it hits a slick spot and slides straight off the track. If the radius of the track is 67 m,67 m, what is the car's speed ?v when it leaves the track?
- 1. How is the direction of the velocity V vector drawn while an object moves with uniform circular motion? 2. What is the direction of the acceleration ? 3. How is the acceleration calculated? 4.What are the units for the acceleration of any object moving in a circle?A truck at a constant speed of 60 m/s covers one revolution around a circular road in 50 seconds. (a) Determine the magnitude of the centripetal acceleration. (b) If the truck weighs 10 metric tons, what is the magnitude of the centripetal force? Show your complete solution. A. ac = 7.54 m/s^2 B. ac = 2.54 m/s^2 C. FC = 75.4 N D. FC = 45.4 NThe 32-inch ceiling fan spins at 60 RPM and accelerates steadily to 130 RPM in nine seconds. A. Determine the speed (ft / s with two decimal places) for the point 15 inches from the center of the fan 16 seconds after the beginning of the above movement. B. Specify the time (s with two decimal places) for the fan to rotate 125 revolutions. Draw a Free Body Diagram if necessary in part A or part B or both. Please urgent ??? thank you
- A motorcycle moves around a circular track whose radius 2.69km. . It goes once around the trac368 seconds. What is the magnitude of the capital acceleration of the bike? A. 1.2 b.0.54 c.0.78 d.2.3 e.0.653. Now you drive clockwise around the track again. This time, as you drive the large arc (radius 30 m), you speed changes uniformly from 7 m/s to 13 m/s in 2 seconds. a. What is your tangential acceleration in this turn? b. What is your centripetal acceleration at point (Y) when your speed is 10 m/s? Y c. What is the magnitude of your acceleration at this point? d. Draw an arrow at (Y) indicating the direction of the acceleration at that point. What is the angle between the direction of the velocity and acceleration vectors at that point?A car initially traveling eastward turns north by traveling in a circular path at uniform speed as shown in Figure P7.15. The length of the arc ABC is 235 m, and the car completes the turn in 36.0 s. (a) Determine the cars speed. (b) What is the magnitude and direction of the acceleration when the car is at point B? Figure P7.15
- A truck at a constant speed of 60 m/s covers one revolution around a circular road in 50 seconds. (a) Determine the magnitude of the centripetal acceleration. (b) If the truck weighs 10 metric tons, what is the magnitude of the centripetal force? Show your complete solution. Make sure your hand writing is readable. A. ac = 7.54 m/s^2B. ac = 2.54 m/s^2C. FC = 75.4 ND. FC = 45.4 N3. a. Since we use friction to accelerate our cars around turrns, we can't take turns as fast in wet or snowy weather. What is the minimum radius turn you can make at a speed of 56.5 mph (25.2555 m/s) in dry weather with Us=0.75? Suppose the road is flat. 3.4361 Previous submissions: b. What is the minimum radius turn you can make at the same speed when it's snowing and us = 0.25? 10.3083 Previous submissions: m m incorrect incorrectA 45-caliber bullet shot straight up from the surface of the earth would reacha height of s(t) = 832t − 16t^2 after t seconds.1. Find the bullets velocity function.2. Find the bullets acceleration function.3. How long does it take the bullet to reach its highest point?4. How high does the bullet go?5. When will the bullet be 816 feet in the air? Only questions 4 and 5!