Question

If an object starts with an initial velocity of 10 m/s. and accelerates at 2 m/s?. Its velocity at t = 10s is​

Answer 1

Aɴsᴡeʀ:

• Final velocity of an object = 30m/s

Gɪᴠᴇɴ:

• Intimal Velocity (u) = 10 m/s
• Acceleration (a) = 2 m/s²
• Time (t) = 10 seconds

Nᴇᴇᴅ Tᴏ Fɪɴᴅ:

• Final velocity of an object = ?

Solution:

Bʏ ᴜsɪɴɢ ғɪʀsᴛ ᴇǫᴜᴀᴛɪᴏɴ ᴏғ ᴍᴏᴛɪᴏɴ:

• v = u + at

Pᴜᴛᴛɪɴɢ ᴛʜᴇ ᴠᴀʟᴜᴇs:-

➦ velocity = 10 + 2 × 10

➦ velocity = 10 + 20

➦ velocity = 30 m/s

Tʜᴇʀᴇғᴏʀᴇ:

• Final velocity of an object = 30m/s

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Answer 2

Answer:

Given,

u=10m/s

a=2m/s2

t=10sec

From 2nd equation of motion,

S=ut+1/2at2

S=10×10+1/2×2×10×10

S=100+100

S=200m