An object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
Hope it helps :)
Answer:
![v = 10.8 m/s^{2}](https://tex.z-dn.net/?f=v%20%3D%2010.8%20m%2Fs%5E%7B2%7D)
Explanation:
The centripetal force experienced by the steel toolbox is provided by the friction between the toolbox and the bed of the truck.
Therefore,
--------------------------------(1)
Here,
v - speed of truck
m - mass of toolbox
r - radius of curve around which the truck is turning
f - frictional force
μmg
In order to obtain Vmax, frictional force must also be max
Thus,
f = μmg--------------------------------------------------(2)
Substitute (2) in (1)
μmg
μgr
g - 9.8 m/![s^{2}](https://tex.z-dn.net/?f=s%5E%7B2%7D)
The standard value of coefficient of static friction between steel and steel is
μ ≈ 0.7
Therefore,
![v = 10.8 m/s^{2}](https://tex.z-dn.net/?f=v%20%3D%2010.8%20m%2Fs%5E%7B2%7D)
The Earth takes (365 and 1/4) days to orbit the sun. That's the length of our 'year'.
Since it's not really possible to make our calendar a quarter of a day longer every year, we make the calendar a <u><em>whole</em></u> day longer every 4 years.
So "Leap years" make up for the extra one-fourth day the Earth takes to orbit the sun.
1. Is decreases, stronger
2. Pounds
Explanation:
that was very good question thanks for asking.