Answer:
the answer is D
Explanation:
Since the velocity of the object is the derivative of the position graph, the area under the line in the velocity vs. time graph is the displacement of the object.
Answer:
<h3>
The coefficient of kinetic friction between the puck and the ice is
0.12</h3>
Explanation:
Given :
Initial speed 
Displacement
m
From the kinematics equation,

Where
final velocity, in our example it is zero (
),
acceleration.


From the formula of friction,

Minus sign represent friction is oppose the motion
Where
( normal reaction force )
( ∵
)
So coefficient of friction,


Therefore, the coefficient of kinetic friction between the puck and the ice is
0.12 .
The term used to describe the quantity of matter that a body possesses is mass.