Problems

matt is traveling along a straight interstate highway. he notices that the mile marker reads

260. he continues to travel until he reaches the 150 mile marker and then retraces his path

to the 175 mile marker.

a

what is his distance traveled?

b.

what is his displacement from the 260 mile marker?

c.

if he traveled for 2.5 hours, what is his average speed?

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

In an experiment, how can i change human errors? be specific.

In the united states, tornadoes generally occur because of the freezing of ocean water underwater earthquakes meeting of cool and warm air masses shifting of warm and cool ocean currents