A rabbit runs across a parking lot on which a set of coordinate axes has, strangely enough, been drawn. The co-
ordinates (meters) of the rabbit's position as functions of
time t (seconds) are given by
x = -0.31t2 + 7.2t + 28
and
y = 0.22t2 – 9.1t + 30.
Att = 15 s, what is the rabbit's position vector r in unit-
vector notation and in magnitude-angle notation?

If a person whirls an object horizontally in a counter clockwise direction and the string breaks at point p as shown, what path will the rock follow?

Based on the diagram of the electric field lines around the two spherical charges, what are the signs of the left and right charge respectively?

A60-kg box is being pushed a distance of 6.8 m across the floor by a force p with arrow whose magnitude is 162 n. the force p with arrow is parallel to the displacement of the box. the coefficient of kinetic friction is 0.24. determine the work done on the box by each of the four forces that act on the box. be sure to include the proper plus or minus sign for the work done by each force. (the floor is level and horizontal. forces that act on the box: pushing force p, frictional force f, normal force n, and weight mg.)