Question

1. A car accelerates from 6 m/s to 16 m/s in 10s calculate the acceleration of the
car at that time.

Answer 1

ɢɪᴠᴇɴ :-

• Initial velocity (u) = 6 m/s
• Final velocity (v) = 16 m/s
• Time taken (t) = 10 s

ᴛᴏ ғɪɴᴅ :-

• Acceleration (a)

Sᴏʟᴜᴛɪᴏɴ :-

On using 1st equation of motion, we get,

➤ v = u + at

➪ 16 = 6 + a × 10

➪ 16 - 6 = 10a

➪ 10a = 10

➪ a = 10/10

➪ a = 1 m/s²

Hence,

• Acceleration of the car is 1 m/s²

Answer 2

Answer:

Explanation:

Solution,

Here, we have

Initial velocity, v = 6 m/s

Final velocity, u = 16 m/s

Time taken, t = 10 seconds

To Find,

Acceleration, a = ?

According to the 1st equation of motion,

We know that,

v = u + at

So, putting all the values, we get

⇒ v = u + at

⇒ 16 = 6 + 10a

⇒ 16 - 6 = 10a

⇒ 10 = 10a

⇒ 10/10 = a

⇒ a = 1 m/s²

Hence, the acceleration of car is 1 m/s².

Some Important term,

Retardation - When the final speed of a body is less than its initial speed, the body is said to be retardation. Retardation can also be expressed as acceleration with a minus (-) sign.