A car is travelling a: a speed of 120 km/h as it approaches point A. Beginning a

Question

A car is travelling a: a speed of 120 km/h as it approaches point A. Beginning at A, the car decelerates at a constant 4 m/s^2. Once the car reaches point B, its constant rate of decrease of speed changes instantaneously to 1.0 m/s^2 as it rounds the Interchange ramp a. Calculate the car's total acceleration before it reaches point B. b. Calculate the car's velocity at B (row curving) and at C. c. Calculate the car's racial acceleration at B and at C. d. Calculate the magnitudes of car's total acceleration at B and at C. The design of a camshaft-drive system cylinder automobile engine is shown below. As the engine is reserved up, the belt speed, v, changes uniformly form 5.5 m/s to 6.7 m/s to 6.7 m/s over a two second time interval. The radius of the large gear is 60 mm. a. What is the tangential acceleration of the belt? b. What is the radial acceleration at point P_1 when v is 6.1 m/s {average speed)? c. What is the total acceleration at point P_1 when v is 6.1 m/s? d. What is the total acceleration at point P_2 when v is 6.1 m/s?

Explanation / Answer

time =distance/speed

t = distance / speed

= 90m / 120m/hr

=2.7 sec

a) acc = 2 ds/dt2

= 2*90/(2.7)2 = 7.29 m/s2

b) velocity at B =

=20

velocity at C= 15

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