Question

the velocity of a car increases from 36 kilometre per hour to 108 kilometre per hour in 10 seconds its acceleration is​

Answer 1

Answer:

Hope it helps

Explanation:

1km/hr=5/18mper sec.

therefore,

108km/hr= 108×5/18=30m/s

similarly, 36km/hr=10m/sec.

acceleration is change in velocity per unit time.

a=∆v/∆t

a=(30-10)/10sec.

=20/10

=2m/sec^2.

Answer 2

ɢɪᴠᴇɴ :-

• Initial velocity(u) = 36 × 5/18 = 10 m/s
• Final velocity(v) =108 × 5/18 = 30 m/s
• Time taken (t) = 10 seconds

ᴛᴏ ғɪɴᴅ :-

• Acceleration (a)

sᴏʟᴜᴛɪᴏɴ :-

On using 1st equation of motion, we get,

➦ v = u + at

➪ 30 = 10 + a × 10

➪ 30 - 10 = 10a

➪ 10a = 20

➪ a = 20/10

➪ a = 2 m/s²

Hence,

• Acceleration (a) is 2m/s²