Someone help please 1 You are cycling along a flat road. a Are you moving up or down? b What is the force that is pulling you downwards? c There is a force from the road acting on the bike. Is this force acting upwards or downwards?

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.