a nonzero external net force acts on a particle. What can you say about the momentum of the particle?
When a non zero net external force acts on the system momentum changes continuosly . Since from Newtons second law , Net force acting on a system is equal to rate of change of momentum in the direction of applied force.
i.e.
Hence ,
So from above equation it is clear that with the applied external force momentum changes .
a nonzero external net force acts on a particle. What can you say about the momentum...
What is everything that you can say about the net force acting on a crate that is being raised upwards at a constant pace ?
Suppose a group G has order 35 and acts on a set S consist- ing of four elements. What can you say about the action? Hint: Must there be a fixed point?) b. 4. a. What happens if IGI-287 IGI-30?
Suppose a group G has order 35 and acts on a set S consist- ing of four elements. What can you say about the action? Hint: Must there be a fixed point?) b. 4. a. What happens if IGI-287 IGI-30?
(a)? Some people say that the “force of inertia” (or “force of momentum”) throws the passengers forward when a car brakes sharply. What is wrong with this explanation? Which Newton’s law can be used to explain what really happens? (b)? Can we say that the earth is approximately an inertial reference frame? Explain your reasoning. (c)? Imagine a coin. If you throw it in the air, it will go straight up and at its highest point, its velocity will be...
There are (one can say) three coequal theories of motion for a single particle: Newton's second law, stating that the total force on an object causes its acceleration; the work- kinetic energy theorem, stating that the total work on an object causes its change in kinetic energy; and the impulse-momentum theorem, stating that the total impulse on an object causes its change in momentum. In this problem, you compare predictions of the three theories in one particular case. A 3.40-kg...
1.(a) Alice says Cathy’s body has zero momentum, but
Bob
says Cathy’s momentum is nonzero. Nobody is lying or making a
mistake. How is this possible? Give a concrete example.
(b) Alice and Bob agree that Dong’s body has nonzero
momentum,
but disagree about Dong’s angular momentum, which Alice says
is
zero, and Bob says is nonzero. Explain.
2.Two objects have the same momentum vector. Assume that they are
not spinning; they only have angular momentum due to their motion...
What can you say about the value of the static friction force between two surfaces if the contact area is changed?
Learning Goal: To understand
the relationship between force, impulse, and momentum. The effect
of a net force ΣF⃗ acting on an object is related both to the force
and to the total time the force acts on the object. The physical
quantity impulse J⃗ is a measure of both these effects. For a
constant net force, the impulse is given by J⃗ =F⃗ Δt. The impulse
is a vector pointing in the same direction as the force vector. The
units...
For an object in uniform circular motion, what can you say about the directions of the velocity, acceleration, and net force vectors? The velocity vector is perpendicular to the acceleration vector; the acceleration vector is parallel to the net force vector. The velocity vector is parallel to the acceleration vector; the acceleration vector is perpendicular to the net force vector. The velocity vector is perpendicular to the acceleration vector; the acceleration vector is perpendicular to the net force vector. The...
What change in momentum occurs when a 15.0 newton force acts of a 7.5 kg object for 3.0 seconds?
force Fx acts on a particle that has a mass of 2 kg. The force is related to the position x of the particle by the formula F 3, where C-0.5 if x is in meters and Fy is in Newton (a)What are the SI units of C? (Use the following as necessary: N and m.) (b) Find the work Wdone by this force as the partidle moves from x - 2.8 m to x - 1.6 m (C) At...