A car accelerates from 25 km/hr in 30 seconds. What is the acceleration?
Answer (3)
25 km/hr = 6,9 m/s acceleration = 6,9 / 30 = 0,23
acceleration = 0,23 m / s²
acceleration is units of distance per time squared, take speed divided by time:
(25 km/hr)/(30 sec) = 0.833 km/hr/sec
these units aren't very helpful, so convert to units more likely to represent what your measuring. probably meters per seconds squared:
(0.833 km/hr/sec) (1 hr/ 3600sec) (1000m/km) = 0.23 m/s^2
To find acceleration, convert the initial speed of 25 km/hr to m/s (approximately 6.94 m/s). Based on a hypothetical final speed, acceleration can be calculated using the formula a = (v - u) / t. For a final speed of 16.94 m/s over 30 seconds, the average acceleration is approximately 0.33 m/s².
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