Question

A body starts from rest and move with an uniform acceleration of 3 per square second what will be its velocity at the end of 15 seconds

Answer 1

Gɪᴠᴇɴ :-

• Initial velocity (u) = 0 m/s. --(At rest)
• Acceleration (a) = 3 m/s²
• Time taken (t) = 15 seconds

ᴛᴏ ғɪɴᴅ :-

• Final velocity (v)

sᴏʟᴜᴛɪᴏɴ :-

On using 1st equation of motion, we get,

➭ v = u + at

➭ v = 0 + 3 × 15

➭ v = 45 m/s

Hence,

• Final velocity (v) = 45m/s

therefore,

• Velocity of body after 15 seconds is 45 m/s