S=d/t this is because speed is just the measurement of time and distance
Answer:
Friction or tension
Explanation:
Friction stops an object from moving in the presence of force
There must be a equal opposite reaction.
E=mv2
net force= the sum of all the forces acting on the object
the frictional force is opposite to the direction of motion of the object
If the object moves to the right (positive) then the friction force moves to the left (negative).
so the net force: 50 N - 5 N = 45 N (B)
