Despite current has a magnitude and a direction, like vectors, it is a scalar because it doesn't obey laws of vector addition. For instance, if we consider a junction of 
in a circuit, and two currents entering this junction, we know that the resultant current is just the algebraic sum of the two currents, not the vector sum, so it is not a vector quantity.
What is the fastest thing in the world, and what is its speed?
1 answer:
You might be interested in
Answer:
Explanation:
Given
inclination
initial speed
Point of release is 45 m above the ground
Considering stone to be a projectile, so time taken by projectile for its zero vertical displacement is
Now after completing zero vertical displacement , stone needs to travel another 45 m in downward direction with initial speed u=20\sin 30
where,
thus total time time required is
vertical velocity just before hitting
Horizontal velocity
Net velocity Just before hitting