Step 1: Use the formula for momentum
Momentum (\( p \)) of a body is given by:
\[
p = m \times v
\]
where:
- \( m \) is the mass of the body (10 kg),
- \( v \) is the velocity of the body (5 m/s).
Step 2: Substitute the given values
\[
p = 10 \times 5 = 50 \, \text{kg m/s}
\]
Answer: Therefore, the momentum of the body is 50 kg m/s. So, the correct answer is option (1).