Answer:
Explanation:
1.)acceleration= final velocity-initial velocity/time
90m/s-0m/s /3seconds
=30m/s^2
2.) distance= speed*time
90m/s*3seconds
=270m
The type of pollution when small particles of soil are suspended in the water is called Suspended Matter Pollution. <span>This type of pollution happens when soil enter the water and do not mix in with the water molecules.</span>
Answer:
The difference between reversible and irreversible is reversible can be changed but irreversible can not.
Physical activity is movement that is carried out by the skeletal muscles that requires energy. In other words, any movement one does is actually physical activity. Exercise, however, is planned, structured, repetitive and intentional movement intended to improve or maintain physical fitness.
Answer: (1) centripetal force is inversely proportional to the radius of an object moving in a circular form.
Centripetal force = mv^{2}/r.
m=mass, v=velocity, r=radius.
(2). Doubling the mass affect the centripetal force following the fact that the centripetal force is directly proportional to the mass therefore, if the centripetal force increases four times (Radius kept constant), the mass increases two times.
(3) If radius is increased, then the centripetal force will decrease.
(4). If mass is doubled, then the centripetal force will also double.
Explanation:
from the above relation, centripetal force is inversely proportional to the radius and is directly proportional to the mass and velocity.
If only the centripetal force is increase and others are kept as it is, then the moving object will gradually move towards the focus point reducing the radius proportional to the increase in centripetal force.
for example:- relating to mass and velocity, if the centripetal force is increase four times, the mass or velocity will increase two times keeping the radius constant for the condition.
