English Medium कक्षा ९ - CBSE Question Bank Solutions for Science

What is the unit of force ?

What is the relationship between force and acceleration ?

A 1000 kg vehicle moving with a speed of 20 m/s is brought to rest in a distance of 50 metres :
(i) Find the acceleration.
(ii) Calculate the unbalanced force acting on the vehicle.

Name the quantity whose one of the units is pascal (Pa).

State the units in which pressure is measured.

What name is given to thrust per unit area ?

What force acting on an area of 0.5 m² will produce a pressure of 500 Pa ?

Fill in the blank with suitable word :
Force acting on a unit area is called................... 

Fill in the blank with suitable word :

In fluids (liquids and gases), pressure acts in....................directions, and pressure.................as the depth increases. 

Fill in the blank with suitable word :

In order to sink in a fluid, the density of an object must be .................. than the ................ of the fluid. 

 Fill in the blank with suitable word :

If the area of a snow shoe is five times....................... than the area of an ordinary shoe, then the pressure of a snow shoe on the snow is five times............... 

What are fluids ?  Name two common fluids.

Name two common fluids.

How are sol, solution and suspension different from each other?

Is displacement a scalar quantity?

A particle is moving in a circular path of radius r. The displacement after half a circle would be :

The numerical ratio of displacement to distance for a moving object is :

In which of the following cases of motion, the distance moved and the magnitude of displacement are equal?

If the displacement of an object is proportional to the square of time, then the object is moving with :