Answer:
The net force is zero, so the acceleration is zero
Explanation:
Newton's second law states that the acceleration of an object is proportional to the net force applied to it, according to the equation:
(1)
where
is the net force on the object
m is the mass of the object
a is its acceleration
In this problem, we have a sled acted upon two forces, . So the net force on the sled is
(2)
however, we are told that the two forces are equal in magnitude but in opposite directions, so
So, eq.(2) becomes
and so eq.(1) becomes
which means
so the acceleration of the sled is zero, and if the sled was at rest, it will not move.
Answer:
t=0 is t
t=8= 8t
Explanation:
because 0 is means "nothing" so that's why t=0 is t
Answer: 1. A Unbalanced force and net force
Explanation:
The combination of all forces acting on a object is called a Net Force, and a Unbalanced force can cause an object to stop, start moving or change direction.
The work done to stop a car during collision is described in the equation W = F * d where F is the force of collision and d is the distance of impact. In this case, when work is constant and the distance is long, then the force must decrease. If the distance shortens, then the force of collision must increase. The inflation deflation process of the airbag lengthens the distance, hence force is lessened.