Answer:2.05 m
Explanation:
Given
Mass of sled 
initial speed 
coefficient of kinetic Friction 
According to work-energy theorem work done by all the forces is change in Kinetic energy
,where d= distance moved
When a driver presses the brake pedal his car stops with an exhilaration -20
Answer:
<em>17 m/s west</em>
Explanation:
Runner 1 has velocity = 10 m/s west
runner 2 has velocity = 7 m/s east
From the frame of reference of runner 2, we can imagine runner 2 as standing still, and runner 1 moving away from him, towards the west with their combined velocity of
velocity = 10 m/s + 7 m/s = <em>17 m/s west</em>
<span>Henry Moseley established a periodic table that arranges the elements by atomic number;The atomic number increases from left to right on the periodic table;Metalloids have the characteristics of both metals and nonmetals.</span>
