Answer:
The final velocity, 
, is gd.
Explanation:
The condition here is a free falling object. Thus from the third equation of motion under free fall, we have;
= 
+ 2gs
where is the final velocity of the object, is the initial velocity of the object, g is the gravitational force and s is the height.
Since the object falls from a height of d, then = 0 m/s, and s = d.
So that;
= 0 + 2gd
= 2gd
= 2gd
When the distance is 
, = 0 m/s.
Then;
= 2g
= g x d
When the object falls through the height , then the final velocity is gd.
Answer:
9.77 joules
Explanation:
Given :
Mass, m of block = 2.2kg
Coefficient of kinetic friction, μ = 0.25
Distance, d = 2m
The workdone :
Using the relation :
μ * mgcosθ * d
g = acceleration due to gravity = 9.8m/s²
0.25 * 2.2 * 9.8 * cos25 * 2
= 9.7699979
= 9.77 J
Answer:
Answer
Explanation:
please like and mark be mrain list
Answer:
Explanation:
Direction of velocity of electromagnetic wave is given by the formula
E = E j ( vector form )
B = - Bi ( vector form )
Direction of velocity = direction of vector E X B
= E X B
= E j x -Bi
= - EB -k
v = EBk
So the direction of velocity will be along z direction.
