A force of 7.0 N acts on a block of wood at an angle of 50 degrees above the horizontal as the block moves a distance of 6.4 meters to the right. Calculate the work done on the block by the force

The work done on the block of wood by the applied force is 28.8 J.

The given parameters;

The work done on the block of wood by the applied force is calculated as follows;

W = F x dcosθ

W = 7 x 6.4 x cos(50)

W = 28.8 J

Thus, the work done on the block of wood by the applied force is 28.8 J.

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28.796 J

Explanation:

I hope that it's a correct answer.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

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