Question

A body moves with a velocity of 90 km/h . On applying brakes after 5 sec it's velocity reduces to 60 km/h . Calculate the acceleration .

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Answer 1

$\huge\mathbb\red{Answer}$

GIVEN,

$\text{Inital Velocity=90km/hr=25m/s}$

$\text{Final Velocity=60km/h=50/3}$

$\text{Time Taken=5s}$

Now,

$\text{Using first equation of motion}$

$\huge\mathtt{A=\frac{v-u}{t}}$

$A=50/3-25/5$

$A=50-75/3/5$

$A=-25/3/5$

$A= -1.66m/s^2$

Thank You!

#Bebrainly

Answer 2

Answer:

Inital Velocity=90km/hr=25m/s

Final Velocity=60km/h=50/3

Final Velocity=60km/h=50/3

Time Taken=5s

Time Taken=5s

Now,

Using first equation of motion

A= v-u

t

A=50/3-25/5A=50/3−25/5

A=50-75/3/5A=50−75/3/5

A=-25/3/5A=−25/3/5

A= -1.66m/s^2A=−1.66m/s

2

Explanation:

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