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Sand is often placed on an icy road because the sand
temperature
increases the force of friction between the tires of a car and the road
50N
constant in magnitude, but changing in direction
is directed toward the center of the circle
12N
remains the same
10N
Centripetal acceleration of a ball moving at constant speed around a flat horizontal circle is
temperature
increases the force of friction between the tires of a car and the road
50N
constant in magnitude, but changing in direction
is directed toward the center of the circle
12N
remains the same
10N
A 50.-Newton horizontal force is needed to keep an object weighing 500. Newtons moving at a constant velocity of 2.0 meters per second across a horizontal surface. The magnitude of the frictional force acting on the object is
temperature
increases the force of friction between the tires of a car and the road
50N
constant in magnitude, but changing in direction
is directed toward the center of the circle
12N
remains the same
10N
While the object is undergoing uniform circular motion, its acceleration
temperature
increases the force of friction between the tires of a car and the road
50N
constant in magnitude, but changing in direction
is directed toward the center of the circle
12N
remains the same
10N
In order to keep an object weighing 20 Newtons moving at constant speed along a horizontal surface, a force of 10 Newtons is required. The force of friction between the surface and the object is
temperature
increases the force of friction between the tires of a car and the road
50N
constant in magnitude, but changing in direction
is directed toward the center of the circle
12N
remains the same
10N
When an object moves at a constant speed against friction on a horizontal tabletop, there is an increase in the object's
temperature
increases the force of friction between the tires of a car and the road
50N
constant in magnitude, but changing in direction
is directed toward the center of the circle
12N
remains the same
10N
When a 12N horizontal force is applied to a box on a horizontal tabletop, the box remains at rest. The force of static friction acting on the box is
temperature
increases the force of friction between the tires of a car and the road
50N
constant in magnitude, but changing in direction
is directed toward the center of the circle
12N
remains the same
10N
As the surface area of a block increases, what happens to the force of friction?
temperature
increases the force of friction between the tires of a car and the road
50N
constant in magnitude, but changing in direction
is directed toward the center of the circle
12N
remains the same
10N
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