Physics, 06.01.2021 03:20, jujudad0ll
You toss a ball straight upward, in a positive direction. The ball falls freely under the influence of gravity. At the highest point in the ball's motion.
A.) its velocity is zero and its acceleration is positive (upward).
B.) its velocity is zero and its acceleration is negative (downward).
C.) its velocity is positive (upward) and its acceleration is zero.
D.) its velocity is zero and its acceleration is zero.
Answers: 1
Physics, 21.06.2019 22:40, kiaunarayne808
The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively
Answers: 2
Physics, 21.06.2019 22:50, Scp049
As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.
Answers: 1
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