Answer:
the answers are 1 2 and 5!
f=MG
100kg*10=1000
work done =force *distance
1000*3
3000N
Answer:
there it is fella
And that's according to ma observation
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
There is a difference between dragand friction. Friction is relatively constant at different velocities whiledrag increases with speed. Forexample, when you rub your hands together at different speeds, the force of friction remains the same although the heat generated will vary.