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Sagot :
Within 10 seconds, the speed of an automobile moving north at 30 m/s drops to 10 m/s. The vehicle acceleration at 2 m/s².
The initial velocity of a car, u = 30 m/s
The final velocity of the car, v = 10 m/s
Time, t = 10 s
To find,
The rate of change of the car's velocity determines the acceleration. The formula provides it as follows:
a=v-u/t
a=10-30/10
a=-2 m/s²
As a result, the car's acceleration is 2 m/s².
The rate of change in an object's velocity with respect to time is known as acceleration in mechanics. In vector quantities, accelerations exist (in that they have magnitude and direction). The direction of the net force that is acting on an object determines its acceleration. According to Newton's Second Law, the magnitude of an object's acceleration is the combined result of two causes: the net balance of all external forces acting on that object — magnitude is directly proportional to this net resulting force — and that object's mass, depending on the materials out of which it is made — magnitude is inversely proportional to this object's mass. The meter per second squared (m/s2) unit of acceleration in the SI system.
Learn more about acceleration here:
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