give some more examples of electrostatic force

 What is retardation?

 Define gravitational force.

 Define magnetic force.

explain why some of the leaves may get detached from a tree if we vigorously shake its branch...?

what is inertia and momentum?

differentiate between balanced and unbalanced forces..i understood the topic clearly but i need a definition..pls help..

a balanced force can never bring a change in the state of rest or uniform motion of a body. explain

 example of frictional force ?

What is the difference between retardation and deceleration?

A motorcycle is moving with a velocity of 90 km/hr and takes 5 sec to stop after the break is applied. calculate the force exerted by the brakes on the motorcycles, if its mass along with the rider 200km???

 examples of contact forces?

 what are the three types of inertia?

 why is force of friction  called contact force?

GIVE AN EXAMPLE FOR CONTACT FORCE

 what do you mean by the force of friction is observed whenever two surfaces are in relative motion ?????

What is inertia of motion? Give an example.

Electrostatic force can be attractive as well as repulsive.explian

 What is the change in momentum of a car weighing 1500kg when its speed increases from 36km/h to 72km/h uniformly?

 How both contact and non contact forces act when an apple falls down to earth ? 

 a hockey ball of mass 200g , travelling from west to east, at 10 m/s is struck by a hockey stick . as a result the ball gets turned back and now has the speed of 5m/s the ball and the hockey stick were in contact for 0.20s

a) calculate the initial and the final momentum of the ball

b) state the direction of motion in each case 

c) calculate the rate of change of the momentum of the ball 

d)what are the SIunnits of a) momentum of the ball

e) calculate the force exerted by the hockey stick .on the ball and state its direction

c)

 whi is it easier to walk rough surfaces than on smooth substances

 why dust comes out of the carpet on beating??

 how many types of frictional forces are there?please state the exact number.

two tiny holes are made in a plastic bucket, one near the middle part and the other just below the bottom. when this bucket is filled with water, the water rushes out from the bottom hole much faster than from the upper hole. what conclusion do you get from this observation?

what is fictional force?

An athlete always runs some distance before taking a Jump . WHY ????

1.  how much force is required to keep a body moving with a constant speed on a frictionless surface?
2. give an example in which momentum changes even through the speed and mass remain the same?
3. if the mass of a body and the force acting on it are both doubled what happens to the acceleration?
4. is any force required to keep a body moving in a circular path?

 Can i ask somethin' ??? Why is it easier to hold a school bag with wide straps than the one with thin strings??? Pls help me it's pretty urgent ...I've got my assessments

when a hanging carpet is beaten the dust particals start to come out . explain why

waht is meant by  balanced force?

how can both contact and non contact forces act when an apple falls down from the tree to the earth????

 What is a gold leaf electroscope?

 what is air drag ?

Differentiate b/w contact and non-contact forces.Plz need it now,faster

What is a gold leaf electroscope?

 explain the concept of inertia by explaining the example of the two riders on the bike. pls explain why the back seater moves back wards on sudden accleleration and why forward as the brakes are applied.. pls explain in a simple manner if possible.

how can an object move with uniform velocity when balanced forces are applied??

 WHAT IS TENSION FORCE?

 What is the difference between contact and non contact force

what r the types of contact and non contact forces? give a few examples.

1.  if a man jumps out from a boat ,the boat moves a.forwards b.sidewards c.backwards d. downwards.
2. while flying , the birds puch the air a.upwards b.downwards c. sidewards. d.backwards
3. action and reaction act on?
4. if an action is of 10n then the reaction will be of a.10n in the same direction b.20n in the same direction c.10n in the opposite direction

what is formula for force?

?

What is Balanced and unbalanced force

What is 'magnitude'?

IF 2 MASSES ARE IN RATIO 1:2 WHAT IS THE RATIO OF THEIR INERTIA?????????????