Question

In a box, four boxes act on an object and have the following directions and magnitudes; A = 30.4 N East, B = 55.4 N North, C = 98.7 N West, and D = 77.1 N South East.

- What is the magnitude of the net force (in N) on the object?

- What is direction of the force? (Clockwise from the positive y axis).

A crate with a mass of 8.25 kg starts from rest at the top of a 29.7 degrees incline and slides 4.0 m down the incline and takes about 2.4 seconds.

- What is the magnitude of the acceleration on the object in a frictionless scenario?
- What is the magnitude of the acceleration on the object in a scenario with friction?
- What would be the frictional force acting on the crate?
- What is direction of the force? (Clockwise from the positive y axis).

Answer #1

Four forces act on an object, given by A = 37.3 N east, B = 49.3
N north, C = 70.7 N west, and D = 68.7 N south. (Assume east and
north are directed along the +x-axis and +y-axis,
respectively.)
(a) What is the magnitude of the net force (in N) on the object?
_______N
(b) What is the direction of the force? (Enter your answer in
degrees counterclockwise from the +x-axis.) _________°
counterclockwise from the +x-axis

Three forces with magnitudes of 73 pounds, 114 pounds, and 127
pounds act on an object at angles of 30°, 45°, and 120°
respectively, with the positive x-axis. Find the direction
and magnitude of the resultant force. (Round your answers to one
decimal place.)
direction
°
magnitude
lb

A crate with a mass of 3.00 kg starts from rest at the top of a
28.0° incline and slides 2.00 m down the incline in 1.25 s.
(a) What is the magnitude of the acceleration of the crate (in
m/s2)?
2.56 m/s2 correct
b) What is the frictional force (in N) acting on the crate?
(Enter the magnitude.)
(c) What is the coefficient of kinetic friction between the
crate and the incline?
(d) What is the speed of the...

Consider four vectors F⃗1, F⃗2, F⃗3, and F⃗4, with
magnitudes
F1 =53N, F2 =32N, F3 = 10N, andF4 =65N, andθ1 =130◦, θ2 = −150◦,
θ3 = 40◦, and θ4 = −66◦, measured from the positive x axis with the
counter- clockwise angular direction as positive.
What is the magnitude of the resultant vector ∥F⃗∥,whereF⃗ =F⃗1
+F⃗2 +F⃗3 +F⃗4? Answer in units of N.

Two forces are acting on a 2.0 kg object that moves with
acceleration 7.0 m/s2 in the positive
y-direction. If one of the forces acts in the positive
x-direction and has magnitude of 18 N, what is the
magnitude of the other force (in N)?

1. Motion of an object depends on its velocity only.
True
False
2. A car with a mass of 2500 kg is traveling at a speed of 30 m/s
due east. Choose the most appropriate answer to its momentum.
a. 30 m/s due east
b. 30 m/s
c. 75,000 kgm/s
d. 75,000 kgm/s due east
3. A car is traveling at 70 mph and then is involved in an accident
with a head-on collision into a very solid wall. As...

Two forces F1 and
F2 act on an object. Each
force is specified as an ordered pair: its magnitude in Newtons and
an angle measured in degrees counter-clockwise from the positive
x-axis.
Let F1 = (27.0 N, ∠115°
)and F2 = (83.0 N, ∠240°
).
Calculate the magnitude the vector
F1 -
F2. Include three significant
figures in your answer. (If the last digit is a zero, Canvas will
not display it but that's OK.)
Please HELP!

17. Action-reaction forces in third Newton’s law:
a. Always act on the same object.
b. Sometimes act of the same object.
c. Always act on different objects.
d. May or may not be antiparallel to each other.
18. If force exerted by horse on a cart is equal and opposite to
the force exerted by cart on a horse, how does horse manage to move
a cart?
a. Horse has bigger mass than a cart.
b. Horse still exerts greater...

A box, initially at rest, is pulled by a rope as it slides along
a horizontal (level) carpeted floor in the positive direction;
there is friction. The mass of the box is 8 kg and the tension in
the rope has a magnitude of 40 N. After 4 seconds of pulling, the
box has a speed of 12 m/s.
1. While the box is being pulled:
a. what is the magnitude of acceleration of the box? Answer:
_________
b. what...

object of mass 17.0-kg subjected to a non-zero net force moves
with an acceleration of (5.00î − 5.00ĵ) m/s2. (a) Determine the
magnitude and direction of the net force acting on it. magnitude
106 Incorrect: Your answer is incorrect. As per Newton's second law
what is the relationship between force, mass, and acceleration? N
direction 45 Incorrect: Your answer is incorrect. Review rules
governing components of a vector.° counterclockwise from the +x
axis (b) What acceleration would a 59.5-kg object...

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