ek aur decreases speed from 120 km per hour to 80 km per hour in 12 seconds find the acceleration of car
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ek aur decreases speed from 120 km per hour to 80 km per hour in 12 seconds find the acceleration of car
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Answer:
To find the acceleration of the car, we can use the formula:
Acceleration = (Final Velocity - Initial Velocity) / Time
In this case, the initial velocity is 120 km/h, the final velocity is 80 km/h, and the time is 12 seconds.
Let's plug in the values:
Acceleration = (80 km/h - 120 km/h) / 12 s
Now, let's calculate the acceleration:
Acceleration = (-40 km/h) / 12 s
To convert km/h to m/s, we need to divide by 3.6:
Acceleration = (-40 km/h) / (12 s * 3.6) = -1.11 m/s²
So, the acceleration of the car isapproximately -1.11 m/s².
Verified answer
Explanation:
To find the acceleration of the car, we can use the formula:
Acceleration = (Change in velocity) / (Change in time)
First, let's convert the speeds from kilometers per hour to meters per second.
The initial speed is 120 km/h, which is equal to (120 * 1000) / (60 * 60) m/s = 33.33 m/s.
The final speed is 80 km/h, which is equal to (80 * 1000) / (60 * 60) m/s = 22.22 m/s.
The change in velocity is the difference between the initial and final speeds: 33.33 m/s - 22.22 m/s = 11.11 m/s.
The change in time is given as 12 seconds.
Now, we can calculate the acceleration:
Acceleration = (Change in velocity) / (Change in time) = 11.11 m/s / 12 s = 0.925 m/s².
So, the acceleration of the car is approximately 0.925 m/s².