A mountain climber experiences a nose bleed due to:
decrease in atmospheric pressure
increase in atmospheric pressure
more gravitational pull
effect of high altitude
Pressure can be increased by
Increasing both area and the force
Decreasing the area and increasing the force
Increasing the area and decreasing the force
Decreasing both the area and the force
Inertia can be refered to :
a property of matter
a type of force
the speed of an object
a phenomenon due to gravity
The pressure exerted by a liquid :
Increases with depth
Decreases with depth
Constant
First increases then decreases
An action that involves pushing force is
Dragging a bag on a floor
Lifting a book from a table
Lifting a pen off a table
Kicking a ball
If a car is traveling westward with a constant speed of 20 m/s, what will be the resultant force acting on it?
greater than zero
less than zero
zero
unity
Pressure exerted by a sharp needle on a surface is
More than the pressure exerted by a blunt needle
Less than the pressure exerted by a blunt needle
Equal to the pressure exerted by a blunt needle
None of these
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
Sanjana pushed a box across the floor. It comes to a stop shortly after. Which one of the following reasons explain this?
Gravity is acting on the box in the direction opposite to the box's movement
Friction is acting on the box in the direction opposite to the box's movement
Friction is acting on the box in the same direction of the box's movement
The heat produced by the box's movement slows down the box
It is better to use a sharp tripped nail than a blunt nail because
The tip with the smallest area will produce a higher pressure when a small force is applied
A sharp tipped nail needs a larger force to drive it into the wooden surface
The sharp tip saves cost as less raw materials are required to make such nails
The sharp tip has a spiralling effect when the nail is hit on the head
