What is velocity and its units?
What is velocity and its units?
Velocity is a vector expression of the displacement that an object or particle undergoes with respect to time . The standard unit of velocity magnitude (also known as speed ) is the meter per second (m/s). Alternatively, the centimeter per second (cm/s) can be used to express velocity magnitude.
What is Velocity SI unit of velocity?
SI unit or MKS (Meter-kilogram-second) unit of velocity is also meter per second or m/s or m s⁻¹ where m/s is the SI base unit of velocity.
What is unit of velocity Class 9?
Velocity: Velocity is the speed of an object moving in a definite direction. The SI unit of velocity is also metre per second.
What is unit of acceleration?
Unit of acceleration is the metre per second per second (m/s2). Definition. The snewton is that force which, when acting on a mass of one kilogramme, produces an acceleration of one metre per second per second.
What is force in one sentence?
noun. physical power or strength possessed by a living being: He used all his force in opening the window. strength or power exerted upon an object; physical coercion; violence: to use force to open the window; to use force on a person. strength; energy; power; intensity: a personality of great force.
What is the smallest unit of pressure?
SI unit of pressure For pressure, the SI system’s basic unit is Pascal (Pa), which is N/m² (Newton per square meter, while Newton is kgm/s²). Pascal is a very small pressure unit and for example the standard atmospheric pressure is 101325 Pa absolute.
How do you find height with pressure?
P(h)=101.325⋅exp(−0.02896⋅9.8078.3143⋅288.15h)=101.325exp(−0.00012h)[kPa], where the height h above sea level is expressed in meters. If the pressure is given in millimeters of mercury (mmHg), the barometric formula is written in the form: P(h)=760exp(−0.00012h)[mmHg].
How Does height affect atmospheric pressure?
Atmospheric pressure decreases as the height of a surface above ground level increases. This is because, as the altitude increases: the number of air molecules decreases. the weight of the air decreases.
Which layer of the atmosphere is the hottest?
thermosphere