Question

A block of mass $ 5\, \text{kg} $ is placed on a rough horizontal surface. A horizontal force of $ 25\, \text{N} $ is applied. If the coefficient of friction is $ 0.4 $, what is the acceleration of the block? (Take $ g = 10\, \text{m/s}^2 $)

• A. \( 1\, \text{m/s}^2 \)
• B. \( 1\, \text{m/s}^2 \)
• C. \( 3\, \text{m/s}^2 \)
• D. \( 4\, \text{m/s}^2 \)

Hint:

Key Fact: Net acceleration = \( \frac{F - f}{m} \), where \( f = \mu mg \)