Question

A car increases its speed from 20 km/hr to 72 km/hr in 10 seconds find its acceleration​

Answer 1

Answer: V= 72KM PER HOUR

U= 20 KMPH

TIME = 10 S

ACCELERATION= (V-U)/T

                            = (72-20)/10

                            = 5.2 M PER SECOND SQUARE

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Answer 2

Answer:

${\huge{\mathbb{\orange{\underline{\red{QUESTION:}}}}}}$

A car increases its speed from 20 km/hr to 72 km/hr in 10 seconds find its acceleration.

${\huge{\mathbb{\orange{\underline{\red{GIVEN:}}}}}}$

$\boxed{Starting\:velocity=20\:km/hr}$

$\boxed{Final\:velocity=72\:km/hr}$

$\boxed{Time=10\:seconds}$

${\huge{\mathbb{\orange{\underline{\red{TO\:FIND:}}}}}}$

$\boxed{\green{ACCELERATION}}$

${\huge{\mathbb{\orange{\underline{\red{FORMULA:}}}}}}$

$\boxed{\purple{Acceleration=\frac{Final\:velocity-Velocity}{Time}}}$

${\huge{\mathbb{\orange{\underline{\red{SOLUTION:}}}}}}$

$\boxed{\orange{Acceleration=\frac{72\:km/hr-20\:km/hr}{10\:seconds}}}$

$\boxed{\orange{Acceleration=\frac{52\:km/hr}{10\:seconds}}}$

$\boxed{\orange{Acceleration=5.2\:km/second}}$

${\huge{\mathbb{\orange{\underline{\red{CONCLUSION:}}}}}}$

So , the acceleration of the car is 5.2 km/second .

HOPE IT HELPS YOU