Basically velocity is a vector quantity and is specified in m/s (meters/second). Speed is the distance traveled by an object where as, velocity is distance traveled by an object per unit time in a particular direction. Speed is a scalar quantity where as velocity is a vector quantity
Answer:
77.35 m / s
Ф = -17° from + X axis or 343° from + X axis
Explanation:
v1 = 75 m/s 25° east of north
v2 = 100 m/s 25° east of south
Write the velocities in vector form ,we get


Now add the velocity vectors to get the resultant of the velocities.



magnitude of resultant velocity is 
= 77.35 m / s
The direction is Ф from X axis

Ф = -17° from + X axis or 343° from + X axis
Answer:
Aluminium
Explanation:
Aluminium has the least resistance since It has 3 free electrons per atom. Its resistivity is low compared to other metals provided in the choices (gold, nichrome, tungsten). Low resistivity of metals means a high conductance of the metal referred to.
<h2>The option ( b ) is appropriate answer </h2>
Explanation:
When a projectile is projected from height horizontally . The only force acting upon it is the downwards gravitational force of attraction due to earth .
Due to this force its vertical component of velocity , which is in the downward direction will be increased .
As there is no force horizontally , the horizontal velocity of throw will remain constant .
Thus ( b ) option is the correct option .
Answer:
$55.6
Explanation:
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