What is the change in momentum of a 3 kg object accelerating from rest to 12 m s?
momentum = 36 kg-m/s. Change in momentum = 36 kg-m/s. That’s the impulse that caused the change.
What will be the momentum of a stone having mass of 10 kg when it is thrown with a velocity of 2m s?
20 kg m/s
What will be the momentum of a stone having mass of 20 kg when it is thrown with a velocity of 8m s?
Answer: The answer is 80 kgm/sec.
How is the law of conservation of momentum derived?
Derivation of Conservation of Momentum Applying Newton’s third law, these two impulsive forces are equal and opposite i.e. If the time of contact is t, the impulse of the force F21 is equal to the change in momentum of the first object. The impulse of force F12 is equal to the change in momentum of the second object.
What will be the momentum of a body of mass m which is moving with a velocity v?
mv
What is the momentum of an object of mass m 2 kg moving with a velocity v 10 m s?
Momentum of an object of mass 2 kg and moving with velocity 10 m/s is 20 kg-m/s. Therefore, option (c) is correct.
What is the momentum of an object moving with a velocity v?
Momentum depends upon the variables mass and velocity. In terms of an equation, the momentum of an object is equal to the mass of the object times the velocity of the object. where m is the mass and v is the velocity.
What will be the kinetic energy of the object when its velocity becomes three times?
Answer: If velocity is increased three times, then its kinetic energy becomes 9 times the original value, because it is proportional to the square of the velocity. Hence, kinetic energy = 25 × 9 = 225 J.
When its velocity is increased 3 times?
Momentum can be increased by increasing mass and or velocity so that the product increases three times.
Does the kinetic energy of a body depends on its direction of motion?
The kinetic energy of an object is the energy it has because of its motion. Note that energy is a scalar quantity, i.e., it does not depend on direction, and it is always positive. When we double the mass, we double the energy; however, when we double the velocity, energy increases by a factor of four.
When the mass and velocity are doubled the kinetic energy will?
Kinetic energy is directly proportional to the squared of the velocity. This means that when momentum is doubled, mass remaining constant, velocity is doubled, as a result now kinetic energy becomes four times greater than the original value.
What happens to kinetic energy when velocity is halved?
Kinetic Energy = (1/2) mv2. If the velocity of a body is halved, its kinetic energy becomes one fourth as kinetic energy is directly proportional to velocity squared.
What happens if the speed is doubled?
The change in the kinetic energy of the object as the speed changes is proportional to the square of the factor by which the speed changes. For example if the speed of the object becomes double, its kinetic energy changes to four times the initial kinetic energy.
What is the momentum of a 3 kg bowling ball moving at 3 m s?
In short, Your Answer would be 9 Kg-m/s Hope this helps!
What is the momentum of a 120 pound cyclist that is traveling at 25 mph?
If you want the unit of momentum in metric system, just convert 120 lb to kg and 25 mph to m/s. Then substitute the converted units to the formula of momentum and the answer for momentum in metric unit is 609.47 kg.
What is the momentum of an 8 kg bowling ball?
Physics the fourth
| A | B |
|---|---|
| What is the momentum of an eight kg bowling ball rolling at 2 m/s? | 8 kg x 2 m/s=16 kg x m/s |
| If the bowling ball rolls into a pillow and stops in .5 s, calculate the average force exerted on the pillow. | F=deltamv/t=16kg x m/s/0.5 s=32 N |
| What average force does the pillow exert on the bowling ball. | same |
Which has more momentum a heavy truck moving at 30 miles per hour or a light truck moving at 30 miles per hour?
Which has more momentum, a large truck moving at 30 miles per hour or a small truck moving at 30 miles per hour? twice as much momentum. If the momentum of an object changes and its mass remains constant, it is accelerating (or decelerating), there is a force acting on it, its velocity is changing.
What is the momentum change of an object equal to?
The momentum change of an object is the mass•velocity change. The impulse equals the momentum change.
Which has more momentum a heavy truck moving at 30?
Which has more momentum, a heavy truck moving at 30 km/h or a light truck moving at 30 km/h? Answer: If two objects are running at the same velocity, the object with greater mass has more momentum compared to the object with a lesser mass since the formula of momentum is (momentum = mass × velocity) .
Which moves faster if Superman in free space throws an asteroid that has more mass than him?
its velocity is changing, it is accelerating (or decelerating), or there is a force acting on it. impulse acting on it. If Superman at rest in free space throws an asteroid that has more mass than Superman, then which moves faster? impulse.
Where does a ladybug sitting on a rotating record?
A ladybug sitting on a rotating record has the greatest linear speed on the outside or outer rim of the record. The rational speed of the ladybug is the same no matter where the ladybug is on the record. The linear speed would be zero, but she would have rotational speed.
How much power is expended if you lift?
If it takes 1 second to lift the weight 1 meter, than you have converted 10 Joules of energy to potential energy in one second. That’s 10 Watts of power. If you lift a 2 kg weight 1 meter in 1 second, then the rate of energy conversion is 2 x 10 = 20 Joules per second, or 20 Watts of power.
When two objects collide and completely stick together the collision is said to be inelastic?
If the two objects stick together after the collision and move with a common velocity vf, then the collision is said to be perfectly inelastic. Note: In collisions between two isolated objects momentum is always conserved. Kinetic energy is only conserved in elastic collisions.
Do objects stick together in an inelastic collision?
People sometimes think that objects must stick together in an inelastic collision. However, objects only stick together during a perfectly inelastic collision. Objects may also bounce off each other or explode apart, and the collision is still considered inelastic as long as kinetic energy is not conserved.
What happens when two objects of the same mass collide?
In a collision, there is a force on both objects that causes an acceleration of both objects; the forces are equal in magnitude and opposite in direction. For collisions between equal-mass objects, each object experiences the same acceleration. The woman receives the forward force and the man receives a backward force.
What happens when two objects with the same momentum collide?
When two objects collide the total momentum before the collision is equal to the total momentum after the collision (in the absence of external forces). This is the law of conservation of momentum.
What are 3 types of collisions?
Collisions are of three types:
- perfectly elastic collision.
- inelastic collision.
- perfectly inelastic collision.
Does Momentum have direction?
Momentum does have direction, because it is directly dependent on velocity. Velocity is a measure of an object’s speed with its direction as well.
Can a tiny bullet have more momentum than a huge truck?
Momentum is not equal to the mass of an object divided by its velocity. The momentum of an object can change. Two objects with the same mass will always have the same momentum. A tiny bullet can have more momentum than a huge truck.
Can a lighter object have more momentum than a heavier one?
Question: Can A Lighter Object Have More Momentum Than A Heavier One? No, Because Momentum Is Independent Of The Mass Of The Object.
Can a small light ball have the same momentum as a large heavy ball?
5) A heavy object and a light object have the same momentum. Reasoning: Momentum = mass x velocity. Thus if two objects have the same momentum, the lighter object will have a larger velocity.
Can a bullet have the same momentum as a truck?
Yes, for a bullet to have the same momentum as a truck, it must have a higher velocity because the two masses are not the same.
Does a bullet have more momentum than a ship?
So yes, a tiny thing like a bullet can have the momentum of almost anything in size up to a modern cargo ship. The huge ship moves at less than 50 mph, the bullet would have to be propelled at millions of times that velocity to have the same momentum as the ship.
Is momentum lost when objects collide?
In most collisions between two objects, one object slows down and loses momentum while the other object speeds up and gains momentum.
Why can a bullet with a tiny mass have the same momentum as a slow moving semitruck?
This happens when the mass of one of the objects is very large and does not move. Why can a bullet with a tiny mass have the same momentum as a slow-moving semitruck? The bullet has a very large acceleration. The momentum will be transferred to the other ball and stay the same.
What type of relationship exists between momentum and mass?
Mass and velocity are both directly proportional to the momentum. If you increase either mass or velocity, the momentum of the object increases proportionally.
How can an object have the same speed and mass but change its momentum?
When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater collision force. When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater momentum change.
Does a train have more momentum than a car?
Momentum is conserved – the momentum of one train car decreases while the momentum of the other increases.