Answer: dv/dt = 0
Explanation: Acceleration has to do with when you are changing velocity. since velocity is a speed and a direction you only accelerate when you change speed or change direction or change both in other words you are not accelerating when you are moving in a constant speed and at a specified direction. E.g driving Eastward at a constant speed of 24m/s, such scenario is a case of not accelerating that is acceleration is zero.
Friction can be reduced by making a surface smooth. It can also be reduced by applying lubricants such as oil and grease
An opera singer breaks a thin glass with only the use of her high frequency voice
Wish I could help you you rock
Answer:
<h3>0.69</h3>
Explanation:
Using the Newtons law of motion;
Fm is the moving force = 400N
Ff is the frictional force = μR
μ is the coefficient of kinetic friction
R is the reaction = mg
m is the mass
a is the acceleration
The equation becomes;
Hence the coefficient of kinetic friction between the box and floor is 0.69
