A car is travelling at 72 kilometer per hour . When brakes are applied it experiences a uniform acceleration of 2 meter per second.How long does it take the car to stop? How far does it travel from the instant brakes are applied

A car is travelling at 72 kilometer per hour . When brakes are applied

1.	A car is travelling at 72 kilometer per hour . When brakes are applied it experiences a uniform acceleration of 2 meter per second.How long does it take the car to stop? How far does it travel from the instant brakes are applied
Answer» kmph = 72 * 5/18 = 20 m/sa = - 2 m /s²v = 0the EQUATION of motion in SINGLE dimension is : V = u + a t 0 = 20 - 2 * t t = 10 seconds. s = u t + 1/2 a t² = 20 * 10 - 1/2 * 2 * 10² = 100 meters. OR, v² = u² + 2 a s s = ( 0² - 20² ) / -2 * 2 = 100 meters

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A car is travelling at 72 kilometer per hour . When brakes are applied it experiences a uniform acceleration of 2 meter per second.How long does it take the car to stop? How far does it travel from the instant brakes are applied

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