Answer:
negative force
Explanation:
Here woman is applying the force to stop the child or to prevent him from running.
Here we know that the force applied by the woman is opposite to the motion of child but here the child is not displaced by this applied force but the child is only prevented his running.
So here the work done by the woman is zero as there is no displacement by this force.
But here we can say that the the force of woman is against the motion of child so here this force is opposite force and hence it is termed as negative force here.
so correct answer will be
negative force
Answer:
Decreased by a factor of 4.5
Explanation:
"We have Newton formula for attraction force between 2 objects with mass and a distance between them:

where
is the gravitational constant on Earth.
are the masses of the object and Earth itself. and R distance between, or the Earth radius.
So when R is tripled and mass is doubled, we have the following ratio of the new gravity over the old ones:




Since
and 

So gravity would have been decreased by a factor of 4.5
Answer:937.22 m
Explanation:
Given
First orienteer is running towards North with 5 m/s for 120 s
so he covers a distance of 
After that He runs towards west at 4 m/s for 180 s
So he covers a distance of 
Mathematically its net Displacement is
displacement
displacement
Answer:
140m
70sec I cant show my work but I gave you a push
Explanation:
Brainliest?
The answer is A because bases are greater than 7 and acids are lower than 7