11.86 Two road rally checkpoints A and B are located on the same highway and are 8 mi apart. The speed limits for the first 5 mi and the last 3 mi are 60 mi/h and 35 mi/h, respectively. Drivers must stop at each checkpoint, and the specified time between points A and B is 10 min 20 s. Knowing that the driver accelerates and decelerates at the same constant rate, determine the magnitude of her acceleration if she trav- els at the speed limit as much as possible. A|-- 5 mi C 3 mi B

Q: The acceleration of point A is defined by the relation a = -1.8 sin(kx), where a and x are expressed…

A: Given          a=-1.8sinkxk=3rads

Q: In order to uncoil electrical wire from a 0.6-m-radius spool fixed to a truck, a worker drives to…

A: Given :-VA=5 ms   ,   R=0.6mVB=3 ms  ,t=40 mm=0.04 mVA=wy5=wy-1VB=WR+t-y3=W0.6+0.04-ySolving…

Q: 9) The acceleration of a particle is defined by the relation a = -k√y where k is a constant. Knowing…

A:

Q: Dynamic Question 11.81 Upon entering a curve of a 200 m radius at a speed of 72 km/h, a motorist…

A:

Q: A motorist starts from rest at point A on a circular entrance ramp when t=0, increases the speed of…

A:

Q: Pin A, which is attached to link AB, is constrained to move in the circular slot CD. Knowing that at…

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Q: An advanced spatial disorientation trainer allows the cab to rotate around multiple axes as well as…

A: (a) The coordinated of the pilot in polar coordinates is Differentiate the above relations with…

Q: PROBLEM 11.46 Car A is parked along the northbound lane of a highway, and car B is traveling in the…

A:

Q: 11.10 The acceleration of a particle is defined by the relation a = 3e 021, where a and t are…

A:

Q: Problem 2 Airplane A is flying as shown with speed is being increased at a rate of 12 m/s². Airplane…

A: velocity of A VA=400 kph velocity of B VB=500KPh acceleration of A aA=12 m/s2 tangential…

Q: The system shown starts from rest, and each component moves with a constant acceleration. If the…

A: Length of the cable is constant  L=2yA+2yB+yc=constant 2vA+2vB+vc=0 ........(1) 2aA+2aB+ac=0…

Q: 11.20 A spring AB is attached to a support at A and to a collar. The unstretched length of the…

A: The acceleration is expressed as, From the above expression. Integrate the above expression.

Q: 11.14 For the Scotch yoke mechanism shown, the acceleration of point A is defined by the relation a…

A:

Q: In anticipation of a long 6° upgrade, a bus driver accelerates at a constant rate of 1 m/s? while…

A: Given Data V=35 kmph Vo=60 kmph a=1 m/s2

Q: At a given instant in an airplane race, airplane A is flying horizontally in a straight line, and…

A: The velocity at A is The acceleration at  A is The velocity at B is .The deceleration at B is

Q: A motorist starts from rest at point A on a circular entrance ramp when t=0, increases the speed of…

A:

Q: A particle moves from point A with an initial speed of 1.5 ft/s. It is known that its tangential…

A: Given: The initial speed of particle, vi = 1.5 ft/s The time from A to C, t = 3 second The radius of…

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.