Question

A car is travelling at 36 km per hour if its velocity increases to 72 km per hour in 5 seconds then find the acceleration of car in SI unit

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Answer 1

a= 2m/s²

Step-by-step explanation:

U=36km/h

V=72km/h

T=5s

Conversion of Km to m and H to s

1km = 1000m

36km=36×1000 = 36000m

1H = 3600s

For U, 36000/3600

=10m/s

For V,

72km= 72×1000 =72000

72000/3600

20m/s

a=(V-U)/T

a=(20-10)/5

a= 10/5

a= 2m/s²

Answer 2

36 km /h means 10 m/s. Increase in speed is 10m/s in 5 s . Acceleration is ( 10/5 ) = 2 m/s^ 2.