A sled moves on a horizontal surface with constant speed. If we neglect any frictional force,...
A sled moves on a horizontal surface with constant speed. If we neglect any frictional force, determine which statement is true.
a) Only two non-zero forces act on the sled: a
contact force with the surface (directed upwards) and a downward
force, which is the gravitational attraction of the Earth on the
sledge.
b) The movement of the sled remains rectilinear
and uniform thanks to a force in the direction of its
movement.
c) Two horizontal forces other than zero act on
the sled: One in the direction of movement and another against,
which balances it.
d) Only three non-zero forces act on the sled: a
force of contact with the surface (directed upwards), a downward
force, which is the gravitational attraction of the Earth on the
sled and an extra force, in the direction of its movement
Thank you!
Homework Answers
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A sled moves on a horizontal surface with constant speed. If we
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