2 points If a force of 25 N moves a box 5 meters in 2 seconds, how much power is
used? *
10 W
250 W
62.5 W
2.5 W
0:4W

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."

we need to know the time interval during which the force acts. impulse of force = momentum change

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.