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- The motion of a particle along a straight line is defined by s=⅓t³+6t² feet. Find the average acceleration during the fourth second and when the particle reverses its direction, what is its acceleration? In addition, what is the Velocity during the fourth second.Cars a and b are travelling in the same direction at the same speed of 20 kph along a level road with car A 150 m ahead of car b. Car A decelerates at 2 m/s^2. from this instant up to the time car b overtakes car A. How far in meters Car A has traveled?A boy stretches a stone against the rubber tape of a catapult or 'gulel' (a device used to detach mangoes from the tree by boys in Indian villages) through a distance of 24 cm before leaving it. The tape returns to its normal position accelerating the stone over the stretched length. The stone leaves the gulel with a speed 2.2 m/s. Assuming that the acceleration is constant while the stone was being pushed by the tape, find its magnitude.
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