Question

Can someone answer the following three physics questions?

1. An object of mass m has acceleration a produced by a force F. (a) How would the force be affected if the mass were doubled and the acceleration was to remain the same? (b) How would the acceleration be affected if the mass were doubled for the same force?

2. A 20.0 kg crate has a force of 50.0 N acting on it is going East. Neglecting friction, what is the acceleration? If another 20.0 kg crate is placed on top of the first, what would then be the acceleration?

3. A 200.0 g block of wood is pushed across a table with an acceleration of 15 cm/s'. What is the magnitude of the net force acting on it?

Answer #1

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...

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...

1) Two movers use ropes to pull a heavy box horizontally across
a level floor. One pulls with a force of 175.0 N at 20.0 degrees
North of East, while the other pulls with 200.0 N at 10.0 degrees
West of North. The box has a mass of 125.0 kg, and has coefficients
of friction (with the floor) static= 0.350 kinetic= 0.220. a) In
what direction is the friction force acting? b) The box is
initially stationary. What is its...

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...

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...

1.) A box with a mass of 5 kg only has three forces acting on
it:
One force of 16 N due East.
One force of 24 N due South.
One force of 39 N due East
What is the magnitude of the box's acceleration, in
m/s2?
Write the number and not the units.
2.) A box with a mass of 10 kg only has two forces acting on
it:
One force of 15 N due East.
One force of...

1.) A block of mass 0.40 kg is attached to the wire connected to
the wall making an angle of 90 degrees with it. It is also attached
to the ceiling with the wire making an angle of 53 degrees with the
horizontal. Calculate tensions at each wire. (s the tension in the
wire hinged to the ??wall and is the tension in the wire attached
to the ceiling).
2.) A 5.0 kg wood block is on ice being pulled...

9. Object #1 has mass m; object #2 has mass 10m. They
are separated by the distance d. We can conclude that:
Object 1 exerts greater gravitational force on object 2, than
object 2 exerts on 1.
Object 1 exerts smaller gravitational force on object 2, than
object 2 exerts on 1.
Object 1 exerts on object 2 gravitational force equal in
magnitude to force eqerted by 2 on 1.
Our answer depends on distance d.
10. Consider two objects:...

1)A object is released from rest from a height of 1.8 m and
moves down the incline as shown. What is the angular speed of the
object when it reaches the horizontal surface? (ignore the
rotational kinetic energy, friction force, drag force).The mass of
the object is 50.0 kg. a)5.9 m/s b)3.3 m/s c) 2.5 m/s d)1.8 m/s
2) a 5.0 kg bird, accelerating from rest at a constant rate,
experiences a displacement of 28 m in 11 seconds. What...

An object with a mass m = 3.5 kg is released from rest at the
top of the ramp. The length of the ramp is 4 m. The object slides
down the ramp reaching a speed of 1.8 m/s at the bottom.
(a) How much time (in sec) does it take the object to reach the
bottom of the ramp? (use kinematics equations)
(b) What is the acceleration of the object (in m/s2 )? (use
kinematics equations)
(c) If the...

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