A) Undesirable friction exists between the connections of the tires and the frame as well as the pedals. Lubricating fluid is applied to reduce this.
B) Desirable friction exists between the tires and the road, helping the bike grip the road.
Heat? I need more details but im sure it is heat.
Answer:
Explanation:
(a)Gravitational Force is W=mg
Frictional force is f
Normal force is N
(b)Since the block is in Equilibrium therefore from diagram we can see that
(c)Magnitude of Normal Force
(d)friction is also given by
and
thus 
Weight is directly related to mass, but it also
depends on the local gravity.
Acceleration is directly related to mass, but it also
depends on the net force acting on the mass.
<span>
<span>
</span></span>Volume is directly related to mass, but it also
depends on the density of the object or sample.
Inertia is directly related to mass, and is completely determined
by the mass. It doesn't depend on anything else, so this may be
the best choice.
Answer:
No net force means the truck reamains at rest or the motion of the truck does not change.
Explanation:
