The speed of a car changes from 54 km/h to 72 km/h in three minutes, find the
acceleration.
Step by step answer required.
Answers
Complete step-by-step answer:
In the question we are given a car which is moving with a speed of 72 km/h.
We are asked to calculate the car’s speed in m/s.
We know that 1 kilometer is 1000 m.
Hence to convert kilometers into meters we need to multiply the value in kilometers with 1000.
We also know that 1 hour is 60 minutes and 60 minutes is 60×60=3600sec60×60=3600sec. Hence to convert hour to meter we need to multiply the value in hour with 3600.
Therefore to convert km/h into m/s we need to multiply the value in km/h with 1000360010003600.
Thus in this case we have the speed of the car as, 72 km/h.
Therefore to calculate the speed in m/s we need to multiply 72 km/h with 1000360010003600.
i.e. 72km/h=72×1000360072km/h=72×10003600
⇒72km/h=20m/s.⇒72km/h=20m/s.
Hence the speed of the car in m/s is 20.
Note: Here we multiply the value in km/h with 1000360010003600.
We know that 1000360010003600 can be simplified into 518518.
Therefore instead of multiplying the given value in km/h with 1000360010003600 we can simply multiply that value with 518518.
By doing this also we get the same solution.
Considering the given case in this form, we can write
72km/h=72×
Answer:
The speed of a car changes from 54 km/h to 72 km/h in three minutes, find the
acceleration.
Step by step answer required.