Question

Tick the correct. find acceleration (m/sec²) of the body when speed changes from 20 km/hr to 30 km/hr in 10 secs. (a) 0.53. (b) 0.73. (c) 0.63. (d) 0.83​

Answer 1

Answer:

Im getting the answer as none of these

Explanation:

Unit of Acceleration is m/s^2.

a= (v2-v1)/(t2-t1)

(t2-t1)=10 sec

v2= 30 km/h = 30×5/18 = 8.33 m/s

v1= 20km/h = 20×5/18= 5.55 m/s

a= (8.33-5.55)/10 = 2.77 /10

a= 0.277m /s^2

a= 0.28 m/s^2

Hope this helps....=))

Answer 2

0.278 m/s².

Hope it's helpful to you.