The pressure exerted by a woman wearing shoes with pointed heels is ................. than what an elephant can exert on the ground with one foot.
Much lesser
Much greater
Both equal
None of these
A sharp knife can cut food much more easily because-
It produces greater force than blunt knife.
Its mass is less as the blade is thinner.
It produces greater pressure on the food.
Friction between the blade and food is reduced.
Momentum of a massive object at rest should be :
very large
very small
zero
equal to gravitational constant
A car accelerates on a horizontal road due to the force exerted by :
the engine of the ear
the driver of the car
the earth
the road
Which of the following is NOT a type of force?
muscular
magnetic
chemical
gravitational
How much force is acting perpendicular to a surface having area of 0.5m2, will produce a pressure of 500 Pa ?
250 N
350 N
450 N
200 N
Which of the following is NOT true ?
A sharp knife can easily cut due to its small cutting surface
It is easier to walk in sand than on road
A battle tank can move easily on soft ground because its tracks have bigger surface
The pressure exerted by a needle is much more than the foot of an elephant
Which of the following statements is incorrect about a force?
It can be seen but it cannot be felt.
It is needed to start an object moving.
It can change the shape of an object.
It can make a moving object stop.
A force of 10 N is acting on an object of mass 10 kg. What is the acceleration produced in it ?
1m/s2
1m/s
100 m/s2
100 m/s
Which of the following example describes change of shape by applying force?
Kicking a ball to move faster
Switching on a fan to rotate
Jumping from a height
Tearing a paper into two pieces
