Consider the free-body diagram. If you want the box to move, the force applied while dragging must be greater than the
2 answers:
Answer: The correct option is C.
Explanation: Normal force is the reaction force which acts normal to the surface.
Tension force is the force which remains in the string and as there is no string attached to the box. So, no tension force will act on it.
Friction force is the force which acts opposite to the force acting on the object.
Force of gravity is the force that attracts any object with mass.
To move a box, we need to overcome the force which is acting opposite to it, which is the frictional force. Hence, the correct option is C.
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Answer:
Explanation:
<u>Uniform Acceleration </u>
When an object changes its velocity at the same rate, the acceleration is constant.
The relation between the initial and final speeds is:
Where:
vf = Final speed
vo = Initial speed
a = Constant acceleration
t = Elapsed time
It's known a train moves from rest (vo=0) to a speed of vf=25 m/s in t=30 seconds. It's required to calculate the acceleration.
Solving for a:
Substituting: