Answer:
1.52905 seconds
4.58715 m
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
= Coefficient of friction = 0.4
g = Acceleration due to gravity = 9.81 m/s²
a = Acceleration = 
Equation of motion

It will take 1.52905 seconds for the block to slow down

The block will travel 4.58715 m before it stops
Based on the length of side of the cube given, the length of the needle is 2.28 inches.
<h3>What is the length of the needle?</h3>
The length of the side of a cube and its diagonal are related by the formula below:

where s is length of side



Therefore, the length of the needle is 2.28 inches
Learn more about length of diagonal of cube at: brainly.com/question/800212
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C I believe that would be it
Answer:
49 m/s
Explanation:
Acceleration = velocity / time
You should know accleration due to gravity is 9.8 m/s^2 and you're given t = 5, so you can solve for velocity:
9.8 = v / 5
v = 49
Radiation waves / EM spectrum - infrared light<span>, </span>ultraviolet light<span>, </span>Xrays<span> and </span>gamma.