A freight train slows down as it approaches a train yard. If a force of -3.8x106N is required to provide an acceleration of -0.33m/s2 what is the train’s mass?

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

its a 5.5 n

glad that

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

it was given as a lesson and guide for prayer.