15 questions in Forces and motion at Form 2
Most triedMost missedNewest- What is the unit of force?
- A car travels 120 km in 2 hours. What is its average speed?
- What is work done?
- A learner pushes a box with a force of 50 N over 4 m. How much work is done?
- What is power?
- A pump does 3 000 J of work in 60 s. What is its power?
- Why is no machine 100% efficient?
- A machine needs 400 J of input to do 300 J of useful work. What is its efficiency?
- What is the mechanical advantage of a machine?
- A lever lifts a 600 N load with an effort of 200 N. What is the mechanical advantage?
- What is acceleration?
- A car speeds up from 0 to 20 m/s in 5 s. What is its acceleration?
- Which material can be made into a permanent magnet?
- Which way does a freely hanging magnet point?
- How can you show the shape of a magnetic field?