Accepted Answer
The rate of change of an object's velocity with respect to time is defined as acceleration. The car’s acceleration in m/s is 2.7778 m/sec².What is acceleration?The rate of change of an object's velocity with respect to time is defined as acceleration. Vector quantities are accelerations. The orientation of an object's acceleration is determined by the orientation of its net force.Acceleration = (Final Velocity - Initial Velocity)/ Time takenGiven that car can accelerate from rest to 70km/h in 7 seconds. Therefore, we can write,Initial Velocity = 0 m/secFinal Velocity = 70 km/hr = 70×(5/18) m/sec = 19.444 m/secTime taken = 7 secondsNow, the car’s acceleration in m/s can be written as,Acceleration = (Final Velocity - Initial Velocity)/ Time taken= (19.444 m/sec - 0 m/sec)/7 seconds= 2.7778 m/sec²Hence, the car’s acceleration in m/s is 2.7778 m/sec².Learn more about Acceleration here:https://brainly.com/question/12550364#SPJ2
Suggested Answer
Acceleration is defined as change in velocity divided by time duration.70 kmph = 70 * 1000 meter / 3600 sec = 175/9 meter / secAcceleration = [ 175/9 - 0 ] m/sec / 7 sec = 175 / (9 * 7) = 25/9 m/sec² = 2.77 meters/ sec²
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