Question

If an object is released from a height of 100 metres then its velocity will be g is 10 m/s​

Answer 1

Aɴsᴡᴇʀ:

• The required velocity = 20√5 m/s

Gɪᴠᴇɴ:

• If an object is released from a height of 100 metres then its velocity will be g is 10 m/s.

Nᴇᴇᴅ Tᴏ Fɪɴᴅ:

• The required velocity = ?

Solution:

Fᴏʀᴍᴜʟᴀ ᴜsᴇᴅ ʜᴇʀᴇ:

• v² = u² + 2gh

Pᴜᴛᴛɪɴɢ ᴛʜᴇ ᴠᴀʟᴜᴇs:

➦ v² = 0² + 2 × 10 × 100

➦ v² = 0 + 2000

➦ v² = 2000

➦ Velocity = √2000

➦ Velocity = √2 × 2 × 2 × 2 × 5 × 5 × 5

➦ Velocity = 2 × 2 × 5 × √5

➦ Velocity = 20√5 m/s

Tʜᴇʀᴇғᴏʀᴇ:

• The required velocity is 20√5 m/s

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