View the step-by-step solution to:



alt="20191001_083455.jpg" />PLEASE all I need is help with the answers


If we know that a nonzero net force is acting on an object, which of the following must w
assume regarding the object's condition? The object is;
a. at rest.
b. moving with a constant velocity. c. being accelerated. d. losing, m
estions 2 and 3 refer to the situation and diagram described below.
Two spheres A & B are projected off
edge of a 2.0 m high table with the sa
horizontal velocity. Sphere A has a
10. g and sphere B has a mass of 5 g
both spheres leave the edge of the table at the same instant, sphere A will land
at some time before sphere B.
at some time after sphere B.
C .
at the same time as sphere B.
There is not enough information to decide.
both spheres leave the edge of the table at the same instant, sphere A hits the floor at
ed X. Sphere B will hit the floor
at some point between the edge of the table and X.
at the same distance from the table as X
at some point past X.
There is not enough information to decide.
ruck is moving at constant speed. Inside the storage compartment, a rock is dropp
pint of the ceiling and strikes the floor below. The rock hits the floor
ahead of the midpoint of the ceiling.
exactly below the midpoint of the ceiling.
behind the midpoint of the ceiling.
More information is needed to answer the question.


7. Which of those forces act on the block if it does not move?
a. 1, 2, 3, and 4
b. 1, 2, 4, and 5
c. 1, 2, 3, and 5
d. 2, 3, 4 and 5.
8. Now, the student fills the bucket with water and the block starts to slide at a constant velocity.
Which forces are acting on the block now?
a. 1, 2, 3, and 4
b. 1, 2, 4, and 5
c. 1, 2, 3, and 5
d. 2, 3, 4 and 5.
9. The bucket is now fill with sand to the same label as water. The block will
a. moves at constant speed.
b. slows down gradually to a stop.
c. speeds up for a bit, then moves at constant speed.
d. accelerates constantly.
10. Eventually, the block reaches the edge of the table. After the block leaves the table, which of the
following forces act on the block?
a. the force of motion
b. a normal force
c. kinetic friction
d. the force of gravity
11. A 500 N desk is pull across a marble floor at a constant velocity by a 350 N force. What is the
coefficient of kinetic friction between the desk and the floor?
a. 0.3
b. 0.7
c. 1.43
d. 150

Top Answer

View the full answer

U = Vstone X X
astone ( x) = 0 )
option ( b ) is correct
As the block
2 N
moves with
F= 350
constant velocity so it's
acceleration is
jero -or force of friction = 350 N
UXN = 350
weight = me =...

Sign up to view the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.


Educational Resources
  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question