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What is the recoil velocity of the pistol when a bullet of mass 20g is fired with a velocity 150ms from a pistol of mass 2kg?
Momentum before = momentum after. Since there was no movement before, momentum before = 0 If you think of the bullet as forward/positive momentum and the gun as backward/negative momentum then the momentum of the bullet plus the momentum of the gun =0 and therefore the momentum of the bullet = the momentum if the gun. momentum = mass x velocity P=m/v 20gx150m/s = 2000g (2kg) x velocity 3000 = 2000v 3000 / 2000 = v v = 1.5m/s
When mass and speed of a moving body are doubled what happens to its kinetic energy?
Momentum = (mass x velocity) = M V If velocity is doubled, then new momentum = (M x 2V) = 2 x (M V) = double the original momentum. ========================= Kinetic energy = 1/2 M V2 If 'V' is doubled, then new KE = (1/2 M) (2V)2 = (1/2 M) (4V2) = 4 (1/2 M V2) = 4 times original KE.
Why does heavier object have a greater momentum if light and heavy object have the same kinetic energy?
Well, the equation for momentum is mass x velocity. So, p (momentum)= m x v. The equation for kinetic energy is m x v(squared)/2. Let's say that there are two objects. One is 50 kg, and the other is 30 kg. These objects can both have the same kinetic energy, even though one of them has a larger mass. The determining factor in them both having the same kinetic energy, even though one of them has a larger mass is because of different velocities. The 50 kg object has a velocity of 7 meters/second, and the 30 kg object has a velocity of 9.036961141 meters/second. If you do the math, they both have the same kinetic energy (about the same). 50 kg x 7 m/s = 350 kg x m/s. 30 kg x 9.036961141 = 271.1088342. There is an inverse relation between the momentum of an object and its mass. The mass is the factor that influences momentum more than the velocity; that is why an object with a greater mass will have a greater momentum than the one with a lesser mass, only if they both have the same kinetic energy.
Can a body moving with uniform speed have variable velocity?
Yes it can.When a body moves in a circular path keeping its speed uniform then it will have variable vilocity as vilocity is the speed in a particular direction and while moving in a circular path its direction keeps changing and so does vilocity
When can an object a constant speed but not a constant velocity?
If the velocity is constant there is no acceleration. Speed is not velocity, velocity has speed and direction. I A car going around a circular track at 60 mph keeps the same speed but changes direction and thus accelerates at a constant speed. Velocity is speed in a certain direction. So change the speed but keep direction the same and you change the velocity. or Change the direction while keeping the speed the same and you change the velocity. If the speed is constant, any change of direction is a change in velocity. Driving around in a circle is a case of constantly changing direction.
As a moving object's velocity decreases does its momentum decreases?
Yes, if a moving object's velocity decreases, its momentum will also decrease as momentum is directly proportional to velocity. Momentum is calculated as mass multiplied by velocity, so any change in velocity will result in a change in momentum in the same direction.
If the velocity of a moving body is doubled what does this do to kinetic energy and the momentun of the body?
Doubling the velocity of a moving body quadruples its kinetic energy while doubling its momentum. This relationship highlights how kinetic energy is proportional to the square of the velocity and momentum is directly proportional to velocity.
Does a body moving with uniform acceleration have momentum?
Yes, a body moving with uniform acceleration has momentum. Momentum is the product of an object's mass and its velocity, and acceleration is the rate of change of velocity. As long as the object is moving and has mass, it will have momentum.
What property that a moving object has due to its mass and velocity?
The property that a moving object has due to its mass and velocity is momentum. Momentum is calculated as the product of mass and velocity, and it represents how difficult it is to stop a moving object.
If an object is moving at a constant velocity and you want to change it's momentum you would change it's?
The answer is velocity.
What is the function of the mass and velocity of moving object?
Momentum
If you have increased the momentum of a moving object without increasing its inertia then you have?
Increased its velocity. By not changing its mass (inertia) and increasing its momentum, the only variable left to change is velocity in the equation momentum = mass x velocity.
Is a property of moving objects that depends on mass and velocity?
Momentum depends on mass and velocity.
When the mass of a moving object is doubled and its speed remains the same its momentum?
When the mass of a moving object is doubled and its speed remains the same, its momentum also doubles. Momentum is directly proportional to mass, so doubling the mass will result in a doubling of the momentum regardless of the speed.
Which determines the momentum a moving body?
The product of mass and velocity determines the momentum of a moving body.
Why does a fast moving car have more momentum than a slow moving car?
A fast-moving car has more momentum than a slow-moving car because momentum is directly proportional to an object's velocity. The momentum of an object is the product of its mass and velocity, so the faster the object is moving, the greater its momentum.
What moving object depends on the objects mass and velocity?
The momentum of a moving object depends on its mass and velocity. Momentum is calculated by multiplying an object's mass by its velocity, making it directly proportional to both factors.
