Answer:
C.increased use of fossil fuels
Answer:
72 meters
Explanation:
The puck is acted upon by a force of friction between it and the ice. The strength of that force is relatively low on ice (coefficient of 0.1), that's why we have so much fun sliding over frozen puddles.
The force is determined as follows:
(friction) = (norm force of surface) x (kinetic coefficient of friction)
and it acts perpendicularly to the norm force, i.e., horizontally/parallel to ice surface. (the norm force is the opposite to gravity here).
(friction) = 0.20kg*9.8m/s^2*0.10 = 0.20N
So the puck experiences a deceleration of 0.20N/0.20kg=1 m/s^2.
The distance the puck makes is then calculated using the kinematic equation for decelerated motion with initial velocity v0 (and final velocity of 0):
The puck traveled 72m, unless it hit another hockey player, a tree, or a hole in ice.
The answers for this question are:
a. You push a box until it moves. = unbalanced
b. You push a box but it doesn't move. = balanced
c. <span>You stop pushing a box and it slows down. = unbalanced
As a general explanation for all the items, forces are considered balanced when they cancel each other out. This means that no net force is produced. A and C are unbalanced because one force was able to overcome the force exerted by the object.</span>
Answer: The average distance between the Earth and the Sun
Properties the two pieces must have the same properties