Question

Susan goes out to exercise. She runs for one hour at a constant speed and velocity. What is the overall net force acting on Susan? A) The net force acting on the runner must be zero. Eliminate B) The net force depends on the pull of gravity on the runner. C) The net force acting on the object is pushing in the same direction the object is traveling. D) The net force acting on the object is pushing in the opposite direction the object is traveling.

Answer 1

Answer:  A) The net force acting on the runner must be zero.

Explanation: i got the question & answer from usatestprep ..

Answer 2

Option (A ) is correct.

Explanation:

susan is moving with constant velocity, so both the direction and magnitude of the velocity remains same. so the acceleration of susan =0. This is because an object gets accelerated when either the magnitude or direction of the speed changes.

now the force is given by

$F= ma$

F= force

m= mass

a= acceleration

Here a =0

so F= 0

so the net force on susan is zero.