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The speed of a car moving on a straight road becomes 50 km/hr  from 20 km/hr  in 10 seconds. The acceleration of the car is—
  • a)
    30 m/s²
  • b)
    3 m/s²
  • c)
    18 m/s²
  • d)
    0.83 m/s²
Correct answer is option 'D'. Can you explain this answer?
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The speed of a car moving on a straight road becomes 50 km/hr from 20 ...
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The speed of a car moving on a straight road becomes 50 km/hr from 20 ...
To find the acceleration of the car, we can use the formula:

acceleration = change in velocity / time

The change in velocity is the final velocity minus the initial velocity:

change in velocity = 50 km/hr - 20 km/hr = 30 km/hr

Since the time is given in seconds, we need to convert the change in velocity to km/s:

change in velocity = 30 km/hr * (1 hr / 3600 s) = 30/3600 km/s

The time is given as 10 seconds:

time = 10 s

Now we can calculate the acceleration:

acceleration = (30/3600) km/s / 10 s = 0.00833 km/s²

So, the acceleration of the car is 0.00833 km/s².
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The speed of a car moving on a straight road becomes 50 km/hr from 20 km/hr in 10 seconds. The acceleration of the car is—a)30 m/s²b)3 m/s²c)18 m/s²d)0.83 m/s²Correct answer is option 'D'. Can you explain this answer?
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