The earth moving round the sun actes upon by a force, the work on earth by this force. Do you agree with this statement?
How does K.E. of an object change if its momentum is doubled?
Distinguish between conservative and non-conservative force.
Explain why a cyclist bend while going along curved road?
Differentiate between conservation of kinetic energy and conservation of linear momentum.
When a bus takes a turn, passengers are thrown away from the centre of the curved path. Why?
A solid tied at the end of a string is revolved in vertical. At what point the tension in the string will be the greatest?
In a siphon, water is lifted above its level during flow from container to another, where does it needed potential energy from?
Why is it easy to pull a lawn roller than to push it?
When a heavy truck collides with a car, the occupants of car are more likely to be hurt than the truck driver. Why?
Explain how Newton’s first law of motion follows from the second law.
Explain why a coin placed on a cardboard covering a glass falls into the glass when the cardboard is pulled to one side?
Why is the kinetic friction less than the limiting friction?
Can a body be regarded in a state of rest as well as in motion at the same time? Give an example.
If a moving bullet striking a block of wood on a frictionless table embeds inside it what happens to the KE of the bullet?
The leaves fall when a tree is shaken. Give reason.
3. Explain why a cricketer moves his hands backwards while catching ball?
2. If action and reaction are always equal and opposite, why don’t they always cancel each other?
Solanceae (Black night shade family–potato family)
Major identifying (Diasonistic) characters of family Cruciferae
Differernce of Prokaryotic cells & Eukaryotic cells
Sources of office information : internal and external
Factors to be considered while selecting office machines and furniture