Question 51
If you want to open a door with less difficulty you push it
Question 52
Choose the scalar quantity from the following physical quantities
Question 53
When a bullet is fired from a gun
Question 54
The inability of a body to change its state of rest or uniform motion along a straight line is called its
Question 55
When the velocity of a body is halved
Question 56
It is more difficult to walk on ice than on a concrete road because
Question 57
The theory that the earth constituted the centre of the universe around which the sun and the planets revolved was propounded by
Question 58
Which physical quantity is measured in watts
Question 59
A man stands in a lift which accelerates upwards. The resultant reaction force on the floor of the lift is
Question 60
It is easier to climb down a staircase than climb up because in climbing down