Question

A car starts from rest it moves with uniform acceleration in 10 seconds it attains a speed of 72 km h_1 on a straight road find its acceleration​

Answer 1

Answer:

here the answer

Explanation:

• u = 0
• v=72km =20m/s
• t=10s
• a=?
• a=v-u/t
• a=20-u/10
• a=2m/s

Answer 2

Answer:

Acceleration = 2m/s^2

Explanation:

$acceleration = \frac{change \: in \: velocity}{elapsed \: time}$

Final velocity = 72 kmph = 20 m/s

Initial velocity = 0 m/s

Change in velocity = Final velocity - Initial velocity = 20 m/s - 0 m/s

= 20 m/s

Elapsed time = 10 s

Acceleration = 20/10 m/s^2 = 2 m/s^2