- When a bomb explodes in mid air at its highest point what is the direction of motion of its core?
- Which physical quantity remains constant in a bomb explosion?
- Why is momentum conserved but not energy?
- Is momentum conserved in each direction?
- Can all kinetic energy be lost in a collision?
- Is momentum conserved when a ball hits a wall?
- Is momentum conserved for colliding objects that are moving at angles to one another?
- When a stationary bomb explodes linear momentum is conserved?
- Is angular momentum conserved?
- What happens to kinetic energy when two objects collide?
- Can a bomb initially at rest explodes into?
- Is momentum ever not conserved?
- Is angular momentum always conserved?
- Why is the total momentum of an exploding bomb is zero before and after the explosion?
- Why is momentum always conserved?
- How do you know if momentum is conserved?
- Is momentum conserved when there is friction?
- Is momentum conserved in an inelastic collision?
- Is momentum conserved in explosions?
- Is momentum and kinetic energy conserved in an explosion?
When a bomb explodes in mid air at its highest point what is the direction of motion of its core?
When a bomb explodes in mid air, at its highest point, what is the direction of motion of its core .
Dear student, At the highest position as the bomb has zero velocity, so it is momentarily at rest.
Therefore to conserve the momentum the two fragments will fly off in two opposite directions..
Which physical quantity remains constant in a bomb explosion?
momentum3 Answers. UPDATE : The explosion itself conserves linear momentum, regardless of how small the fragments are. If we ignore gravity and air resistance and all other external forces, there is no change in total momentum. This is because the internal forces all occur in equal and opposite pairs (Newton’s 3rd Law).
Why is momentum conserved but not energy?
Momentum is conserved, because the total momentum of both objects before and after the collision is the same. However, kinetic energy is not conserved. Some of the kinetic energy is converted into sound, heat, and deformation of the objects.
Is momentum conserved in each direction?
Momentum is conserved in all three physical directions at the same time. It is even more difficult when dealing with a gas because forces in one direction can affect the momentum in another direction because of the collisions of many molecules.
Can all kinetic energy be lost in a collision?
Can all the kinetic energy be lost in the collision? Yes, all the kinetic energy can be lost if the two masses come to rest due to the collision (i.e., they stick together). Describe a system for which momentum is conserved but mechanical energy is not.
Is momentum conserved when a ball hits a wall?
Clearly, the momentum of the ball is changed by the collision with the wall, since the direction of the ball’s velocity is reversed. It follows that the wall must exert a force on the ball, since force is the rate of change of momentum.
Is momentum conserved for colliding objects that are moving at angles to one another?
order to see this you need to use vectors and vector addition. However, no matter what the angles are, the total (or net) momentum before the collision must equal the total (or net) momentum after.
When a stationary bomb explodes linear momentum is conserved?
Linear momentum is a conserved quantity. When a stationary object explodes into different parts, the sum of the object’s momentum after the explosion should cancel out and have a total momentum of zero.
Is angular momentum conserved?
The conserved quantity we are investigating is called angular momentum. The symbol for angular momentum is the letter L. Just as linear momentum is conserved when there is no net external forces, angular momentum is constant or conserved when the net torque is zero.
What happens to kinetic energy when two objects collide?
Collisions between objects are governed by laws of momentum and energy. When a collision occurs in an isolated system, the total momentum of the system of objects is conserved. … The total system kinetic energy before the collision equals the total system kinetic energy after the collision.
Can a bomb initially at rest explodes into?
Can a bomb initially at rest explodes into three pieces which fly in mutually perpendicular directions? No, the total linear momentum after explosion should be zero so flying in mutually perpendicular direction is not possible.
Is momentum ever 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.
Is angular momentum always conserved?
In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum. It is an important quantity in physics because it is a conserved quantity—the total angular momentum of a closed system remains constant.
Why is the total momentum of an exploding bomb is zero before and after the explosion?
If we compare the moment just before and just after the collision, kinetic energy is lost, but momentum is conserved. 4. … When there is a bomb explosion, the momentum and kinetic energy are zero before the explosion. Thus the total momentum must remain zero, but the kinetic energy clearly increases after the explosion.
Why is momentum always conserved?
The conservation of momentum is simply a statement of Newton’s third law of motion. During a collision the forces on the colliding bodies are always equal and opposite at each instant. These forces cannot be anything but equal and opposite at each instant during collision. … Therefore the momentum is always conserved.
How do you know if momentum is conserved?
If momentum is conserved during the collision, then the sum of the dropped brick’s and loaded cart’s momentum after the collision should be the same as before the collision. The momentum lost by the loaded cart should equal (or approximately equal) the momentum gained by the dropped brick.
Is momentum conserved when there is friction?
Conservation of momentum applies when net force is zero. Total momentum of the system is zero before canonball is fired. … Now canonball is fired from the canon, and in frictionless cases, horizontal-axis momentum of the whole system would be preserved.
Is momentum conserved in an inelastic collision?
An inelastic collision is one in which the internal kinetic energy changes (it is not conserved). … An inelastic one-dimensional two-object collision. Momentum is conserved, but internal kinetic energy is not conserved. (a) Two objects of equal mass initially head directly toward one another at the same speed.
Is momentum conserved in explosions?
Whether it is a collision or an explosion, if it occurs in an isolated system, then each object involved encounters the same impulse to cause the same momentum change. The impulse and momentum change on each object are equal in magnitude and opposite in direction. Thus, the total system momentum is conserved.
Is momentum and kinetic energy conserved in an explosion?
Explosions occur when energy is transformed from one kind e.g. chemical potential energy to another e.g. heat energy or kinetic energy extremely quickly. So, like in inelastic collisions, total kinetic energy is not conserved in explosions. But total momentum is always conserved.