Science & Technology·MCQ Practice
Work, Energy and Power — MCQ Practice
Updated 19 Oct 2026
Interactive MCQ Practice
Test your knowledge. Click “Solve” to reveal options, select your answer, then check the result. 5 questions available.
Q1medium
A constant 30 N force acts at 60 degrees to a particle’s 4 m displacement. What work does that force do?
Q2medium
A 2 kg cart speeds up from 3 m/s to 5 m/s. What net work is required under the constant-mass particle model?
Q3medium
Two hoists each deliver 600 J of useful mechanical energy, taking 3 s and 6 s respectively. Which conclusion is supported?
Q4medium
An appliance draws a constant 0.8 kW for 2.5 hours. Which pair gives its energy consumption in kWh and joules?
Q5medium
A block slides 2 m while a constant 5 N friction force acts opposite its motion. What is the work done by friction on the block?