Which factors can affect the amount of friction acting on an object on a solid surface?
the weight of the object and the force of a push
the type of surface and the weight of the object
the force of a push and the motion of the object
the motion of the object and the type of surface
sudy
35° 4

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?