What is required to move or stop an object?
Gravity
Friction
Motion
Force
Which type of energy is produced from wind mill?
thermal energy
mechanical energy
heat energy
electrical energy
If an object does not move by an activity it is called
work done
force
direction
work not done
Choose example of work done to the given activities.
Reading books
Drawing
Talking
Lifting up the books
Select one instrument which work by using electric energy.
solar vehicles
solar water heater
solar stove
refrigerator
Select one instrument which workby using electric energy.
