A block of mass 2 kg is pushed along a horizontal surface with a force of 10 N.
Practice Questions
Q1
A block of mass 2 kg is pushed along a horizontal surface with a force of 10 N. If the block moves a distance of 5 m, what is the work done by the force?
10 J
20 J
30 J
50 J
Questions & Step-by-Step Solutions
A block of mass 2 kg is pushed along a horizontal surface with a force of 10 N. If the block moves a distance of 5 m, what is the work done by the force?
Correct Answer: 50 J
Step 1: Identify the force applied to the block. In this case, the force is 10 N.
Step 2: Identify the distance the block moves. Here, the distance is 5 m.
Step 3: Use the formula for work done, which is Work = Force × Distance.
Step 4: Substitute the values into the formula: Work = 10 N × 5 m.
Step 5: Calculate the result: 10 N × 5 m = 50 J.
Step 6: Conclude that the work done by the force is 50 Joules.
Work Done – Work done is calculated as the product of the force applied and the distance moved in the direction of the force.
Units of Work – Work is measured in joules (J), where 1 J = 1 N·m.
Horizontal Motion – The problem assumes no friction or other forces acting against the motion, simplifying the calculation.
