Question

a car is travelling at 20km/hr up to 60km/hr in 6 seconds .What is its accelaration?​

Answer 1

Explanation:

HERE,

u = 20km/hr. = 50/9 m/sec

v = 60km/hr. = 50/3 m/sec

t = 6 sec.

a= ?

By 1st Kinematical equation,

v= u +at

$\frac{50}{3} = \frac{50}{9} + a(6) \\ \\ 6a = \frac{50}{3} - \frac{50}{9} \\ \\ 6a = \frac{150 - 50}{9} \\ \\ 6a = \frac{100}{9} \: m \: {sec}^{ - 2}$

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Answer 2

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