Suppose a 58-n sled is resting on packed snow. the coefficient of kinetic friction is 0.11. if a person weighing 655 n sits on the sled, what force is needed to pull the sled across the snow at constant speed?

You have to apply force of 78.43 N to pull the sled or person across the snow at constant speed

Explanation:

Given data

Sled force F₁=58 N

Person weight F₂=655 N

Coefficient of kinetic friction u=0.11

To find

Friction Force

Solution

To pull the sled across the snow means the force you apply must be equal to and opposite the force of frictional.  

First we need to find the Total normal force

So

Now the force of friction

So you have to apply force of 78.43 to pull the sled or person across the snow at constant speed

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min

the components of a vector are the parts of the vectors that are to each other.

b perpendicular