A car is traveling around a circular track of 670-ft radius. If the magnitude of its total acceleration is 6.1 ft/sec² at the instant when its speed is 33 mi/hr, determine the rate at at which the car is changing its speed. Answer: at = ±i eTextbook and Media ft/sec²
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- A test car starts from rest on a horizontal circular track of 105-m radius and increases its speed at a uniform rate to reach 85 km/h in 13 seconds. Determine the magnitude a of the total acceleration of the car 6 seconds after the start. Part 1 Answer: a 105 m Calculate the tangential component at of the acceleration. eTextbook and Media Hint COM Save for Later m/s2 Attempts: 0 of 1 used Submit Answer2. A Hyundai Santa Fe travels a 1.30km levelled road from Bonifacio roundabout to City Lights Hotel in a minimum time of 45.60seconds. Given that the car accelerates and decelerates at 2.53 m/s², which starts from rest at the roundabout and coming to a stop at the Hotel, determine the maximum speed (in kph) and the time (in seconds) it travel at this speed. Assume time for acceleration and deceleration are equal.Car B is traveling a distance d ahead of car A. Both cars are traveling at 60 ft/s when the driver of B suddenly applies the brakes, causing his car to decelerate at 12 ft/s . It takes the driver of car A 0.75 s to react (this is the normal reaction time for drivers). When he applies his brakes, he decelerates at 14 ft/s? Part A - (Figure 1) Determine the minimum distance d between the cars so as to avoid a collision. Express your answer to three significant figures and include the appropriate units. HẢ ? Value Units
- A pulley with a radius of 80mm is turning at a velocity of 150 rpm clockwise and is accelerating at 100 rad/sec2. Determine: 1. Normal Acceleration 2. Tangential Acceleration 3. Total acceleration (with direction)Badly need within 1hr pls, thank you! Two Cars A and B are approaching each other in adjacent highway lanes. At t= 0,A and B are 1.25 km apart, their speeds are yA = 120 km/h and ya * 72 km/h, and they are at points P and Q. respectively. Knowing that A passes point 0. 50 s after B was there and that B passes point P. 53 s after A was there, determine the uniform accelerations of A and B,also,when the vehicles pass each other the distance of cars A and B from their origin and the speed of B at that time.Please answer this NEATLY, COMPLETELY, and CORRECTLY for an UPVOTE. A motorist is about to enter the exit ramp of a highway. When it is 50m before reaching A (along the straight path), the motorist travels at 80km/h, decreasing at the rate of 0.5m/s2until it reaches B. After it reaches B, it travels at a constant speed. Determine the magnitude of the acceleration: just after A just before B just after B
- 1. In traveling a distance of 3km between points A and a car is driven at 100kph from A to B for t seconds and at 60kph from C to D also for t seconds. If brakes are applied for 4 seconds between B and C to give the car a uniform deceleration, calculate the t and the distance between A and B. 1/A car is traveling around a circular track of 660-ft radius. If the magnitude of its total acceleration is 6.2 ft/sec² at the instant when its speed is 32 mi/hr, determine the rate at at which the car is changing its speed. Answer: at = ± ft/sec²3) A vehicle is moving at 50 mph and suddenly sees an object. It applies the brakes and slows down to a speed of 15 mph. Calculate the following: a. Distance the vehicle would move before driver activates the brakes. (Use design PIEV time of 2.5 seconds) b. distance the vehicle moved after application of brakes to drop to 15 mph speed (assume constant Ideceleration rate of 11.2 ft/sec²)
- A car is traveling around a circular track of 820-ft radius. If the magnitude of its total acceleration is 6.7 ft/sec? at the instant when its speed is 37 mi/hr, determine the rate a, at which the car is changing its speed.In traveling a distance of 4.2 km between points A and D, a car is driven at 104 km/h from A to B for t seconds and 42 km/h from C to D also for t seconds. If the brakes are applied for 4.3 seconds between B and C to give the car a uniform deceleration, calculate t and the distances between A and B. A Answers: t = S= 104 km/h 101.9262821 i 2.9 B T C T 4.2 km 42 km/h S kmWhile a car is moving with a speed 108 k on a straight road the driver sees a truck which enters the road 75m ahead. The driver applies full brake 0.5s after s/he observes the truck, however the car hits the truck with a speed of 50 k. Then what would be the maximum initial speed of car in when the driver observes the truck in order that the car does not hit the truck with all other conditions are the same?