Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

A car moving with a velocity of 54 km hr is accelerated so that its velocity becomes 72km/hr in 15sec. calculate the acceleration of the car



We calculate acceleration with the formula, a= \frac{v-u}{t} . So subsitute the values in the formula, so it's  \frac{72-54}{15} . We need to multiply it by  \frac{60}{1} because the speed is 15 second and we need to convert it to hour. 72-54 is 18 and multiplied by 60 is 1080. Then divide it by 15 which is 72 km/hr. Your answer will be 72 km/hr :).

Hope it helped!
0 0 0
Thank you so much
The si unit of acceleration is m/s. Then howcome 72. I got 1/3
I didn't do it according to the acceleration, please report my answer then.
Sryyyy 1/50
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts