The acceleration of the ball would be around 9.1666667m/s
To work this out use this formula
acceleration = distance*velocity/distance*time
Sovereignty is a political concept that refers to dominant power or supreme authority.
Explanation:
Sovereignty is an attribute of states that is both an idea and a reality of state power. It is one of the means, an important one, by which the government of a state seeks to ensure the best it possibly can for its people. As such, it also changes over time.
Answer:
c. The coefficient of kinetic friction is less than the coefficient of static friction
Explanation:
When the box finally does break loose. Then the component of the box weight which is parallel to the board weight parallel component, is equal to the
.
![w_{box}=\mu_gn](https://tex.z-dn.net/?f=w_%7Bbox%7D%3D%5Cmu_gn)
For the box to acce;erate thee must be non-zero net force acting on the box parallel to the board. Or we can say,
![w_1>f_g\\w_1>\mu_gn](https://tex.z-dn.net/?f=w_1%3Ef_g%5C%5Cw_1%3E%5Cmu_gn)
Therefore the force of kinetic friction must be less than the force of static friction. Thus,
![\mu_g](https://tex.z-dn.net/?f=%5Cmu_g%3C%5Cmu_s)
Answer:
d = 105 m
Explanation:
Speed of a car, v = 21 m/s
We need to find the distance traveled by the dar during those 5 s before it stops. Let the distance is d. It can be calculated as :
d = v × t
d = 21 m/s × 5 s
d = 105 m
So, it will cover 105 m before it stops.