Physics, asked by shuklaabhinav4p9nkvp, 1 year ago

. A car is travelling at 20 km/h, it speeds upto 60 km/h in 6 seconds. What is its acceleration?

Answers

Answered by sajalchaudhary

acceleration=v-u/t
change km/hr into m/sec=20×5/18=5.55m/sec
60×5/18=16.66
so put in formula=11.11/6=1.85 m/sec square acceleration

Lazarus: sajal Bro you made a little mistake in the answer!!!

Lazarus: Converting km/hrs to m/sec is 18/5 and not 5/18.

sajalchaudhary: no to change km/hr to m/sec we do 5/18bro

sajalchaudhary: bro you are wrong

Lazarus: I admit it that I am wrong.

Lazarus: Please keep it confidential between yourself please.

Lazarus: Oops!! I'm a mess.Are you feeling funny at my mistake? ?

sajalchaudhary: no bro you are also do mistake .not I am not funning of your answer bro.i want to improve your mistake

sajalchaudhary: dont take it seriously.

Lazarus: Okay

Answered by leenasinghal80

Answer:

1.85 m/s^2

Explanation:

According to the given question,

u = initial velocity = 20 km/h = 20×1000/3600 = 5.55 m/s

v = final velocity = 60 km/h = 60×1000/3600 = 16.67 m/s

t = time = 6 sec

a = acceleration

And we are asked to find the acceleration of the car.

We know,

v = u+at

Putting the values we get,

16.67 = 5.55+6a

6a = 16.67-5.55

6a = 11.11

a = 11.11/6

a = 1.85 m/s^2

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