3. the mass of aimi is 47kg. she wears a pair of high-heeled shoes, each with a surface area of contact of 1.5cm with the floor. what is the pressure exerted by aimi on the floor? 4. the mass of a car is 1000kg. if the area of contact between the tyres and the road surface is 25cm^2,calculate the pressure exerted by each tyre on the surface of the road.

Carbon 14 is a naturally occurring stable

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.