Which of the following information about motion can be determined by looking at a position vs. time graph that is a straight line? a. frame of reference
b. average acceleration
c. velocity
d. direction of force applied

Velocity

Explanation:

If the position-time graph of the motion of an object is a straight line, it would mean that the object is moving uniformly. The velocity or the slope of the object is constant in such case. If the slope is curved line, it means that the velocity is not constant.

Hence, the correct option is (c).

answer: a. same unit

explanation:

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