A floating ice block is pushed through a displacement images = (15 m)images − (12 m)images along a straight embankment by rushing water, which exerts a force images = (210 N)images − (150 N)images on the block. How much work does the force do on the block during the displacement?

Explanation:

Displacement,

force,

Work done is defined as the product of force and the displacement in the direction of force.

W = 3150 + 1800

W = 4950 J

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

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