Momentum is not only dependent on the mass and speed of the target. In a given direction, velocity is distance, so an object’s momentum therefore
depends on the direction of motion
. This means that an object’s velocity will shift whether the object accelerates or slows down.
How does change in direction affect momentum?
If a force acts in the same direction as the object’s motion, then the force speeds the object up. Either way, a force will change the velocity of an object. And
if the velocity of the object is changed
, then the momentum of the object is changed.
Does momentum depend on direction?
Direction. Notice that momentum does not just depend on the object’s mass and speed. Velocity is speed in a particular direction, so the momentum of an object
also depends on the direction of travel
.
Is momentum conserved if direction changes?
All of that energy is still in the object, so we say that energy was conserved. If the kinetic energy didn’t change, then neither did the value of the momentum (The momentum vector, however, DID change, since the direction of momentum changed.). Energy is a scalar, not a vector, so
a direction change doesn’t matter
.
How do you find the direction of momentum?
Momentum is a derived quantity, calculated by multiplying the mass, m (a scalar quantity), times velocity, v (a vector quantity). This means that the momentum has a direction and that
direction is always the same direction as the velocity of an object’s motion
. The variable used to represent momentum is p.
Is momentum conserved for the ball?
The momentum of the ball is not conserved at all
. But if it is an perfectly elastic collision the kinetic energy will be conserved and then from (1/2)m(V^2)i=(1/2)m(V^2)f you have the two velocities equal in magnitude. The momentum of the ball of course changes and the change is equal to two times the initial momentum!
Is momentum always conserved?
Momentum is always conserved
, regardless of collision type. Mass is conserved regardless of collision type as well, but the mass may be deformed by an inelastic collision, resulting in the two original masses being stuck together.
Is momentum conserved when a ball hits the floor?
No because the momentum is transferred between the balls. Explain how momentum is conserved when a ball bounces against a floor. It
is conserved when there are no outside forced present
and it has an equal and opposite traction. Also, the ball’s momentum is transferred to the ground.
Is direction important in momentum?
Because momentum is a
vector
, the addition of two momentum vectors is conducted in the same manner by which any two vectors are added. For situations in which the two vectors are in opposite directions, one vector is considered negative and the other positive.
Is momentum the same as inertia?
So, inertia describes an object’s resistance to change in motion (or lack of motion), and momentum describes how much motion it has. Pop quiz answer: Momentum is your force or speed of movement, but
inertia
is what keeps you going. The car had a change in motion (or momentum), but the giraffe resisted that change.
Does energy have a direction?
Note that energy is a scalar quantity, i.e.,
it does not depend on direction
, and it is always positive.
Why do balls eventually stop bouncing?
If you drop the basketball, the force of gravity pulls it down, and as the ball falls, its potential energy is converted to kinetic energy. … This is because the
basketball had an inelastic collision with the ground
. After a few bounces, it stops bouncing completely.
How is momentum conserved when a ball bounces?
Explain how momentum is conserved when a ball bounces against a floor.
It is conserved when there are no outside forced present and it has an equal and opposite traction
. Also, the ball’s momentum is transferred to the ground. As a ball falls toward Earth, the momentum of the ball increases.
Which has more momentum a fast moving bowling ball or a fast moving ping pong ball?
Answer: 3. Because the momenta of the two balls are equal, the ball with
the larger velocity
has the larger kinetic energy. … This means more work must be done on the ping-pong ball than on the bowling ball. Because work is the product of force and displacement, the distance to stop the ping-pong ball is greater.
Why is momentum always conserved?
Impulses of the colliding bodies are nothing but changes in momentum of colliding bodies. Hence changes in momentum are always equal and opposite for colliding bodies.
If the momentum of one body increases then the momentum of the other must decrease by the same magnitude
. Therefore the momentum is always conserved.
Why is momentum not conserved?
Momentum is not conserved
if there is friction, gravity, or net force
(net force just means the total amount of force). What it means is that if you act on an object, its momentum will change. This should be obvious, since you are adding to or taking away from the object’s velocity and therefore changing its momentum.
