Train a is moving 40m/s east. train b is moving 30m/s east. train a is gaining on train b and engineer a would like to avoid a collision with train b, if possible. assume the front of train a is 110m from the rear of train b, when engineer a reacts to the imminent collision. after reacting, engineer a applies train a’s brakes and decelerates at 0.5m/s2.

cant without the picture! ?

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