Using the 2nd equation of motion;
= s = ut + ½at²
= 40 = u×2 + ½ × 6 × 2²
= 40 = 2u + 3 × 4
= 40 - 12 = 2u
= 28/2 = u
= 14 m/s = u
And its done! Simple isn't? :P
Answer:
<h3>Standard unit is a standard measure that remains the same whenever, wherever and by whoever it is used. eg: The standard unit of time is second.</h3>
I think rubbing two pieces of woods together will have more friction than wood rubbing against a smooth metal.
<u>Explanation:</u>
The friction offered by surfaces has a great role in deciding the ease of movement of objects along the surface.
The friction of the surface depends upon its roughness. Rough surfaces offer greater friction than smooth surfaces.
In this question wooden pieces have greater friction than that of smooth metal. So rubbing two wooden pieces together will have greater friction than rubbing a wooden piece against a smooth metal.
I am 99999.999999999% sure that it is his second law of motion.
Hope this helped! :) Please mark brainliest
Answer:
74 N
Explanation:
T = Tension in the string = 74 N
= Density of the steel = 7800 kg/m³
A = Area = 
r = Radius = 
Linear density is given by
The linear density is 0.0177 kg/m
Velocity is given by
The velocity of the wave on the guitar string is 64.65903 m/s
