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A roller-coaster train at rest has a mass of 30 tons If a force of 50000 N acts on it for 12 s then what is its momentum after that time and what is its velocity?
according to Newton's second law the force experienced by an object is directly proportional to its rate of change of momentum.
F = m(v-u) /t
where:-
F = the average force applied
m = the mass of the object
u = the initial speed
v = final speed
t = time
thus when rearranged when u = 0
50000 x 12 = 30000(v-0)
60=3v
v=20ms-1
speed = 20 thus momentum is 100000 Kgms-1
What else can I help you with?
What is the relationship between force, velocity, and momentum in physics, specifically when considering the equation p fv?
In physics, the relationship between force, velocity, and momentum is described by the equation p fv. This equation shows that momentum (p) is equal to the product of force (f) and velocity (v). Momentum is a measure of an object's motion, and it depends on both the force applied to it and its velocity. The greater the force or velocity, the greater the momentum of an object.
What happens to the momentum of a body acted on by an external force?
If the force opposes the motion, it will reduce the velocity and the momentum of the body will decrease. If the force is in the direction of the motion, the velocity will increase and the momentum will increase.
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.
How does momentum effect force?
Momentum is the product of an object's mass and velocity. When an object with momentum experiences a change in velocity, a force is required to cause that change. This force is directly related to the rate of change of momentum and is described by Newton's second law, which states that force is equal to the rate of change of momentum.
What affect momentum?
force and acceleration
How do forces cause a change in an object's momentum?
A force acting on a body causes acceleration. Acceleration is measure of the rate of change in the object's velocity. As its velocity changes, its momentum, which is the product of its mass and velocity, will change.
How do you find time with momentum and force?
To find time with momentum and force, you can use the impulse-momentum theorem which states that impulse is equal to the change in momentum. Mathematically, impulse (force multiplied by time) equals the change in momentum (mass multiplied by final velocity minus initial velocity). By rearranging the formula, you can solve for time: time = change in momentum / force.
What is an object's momentum?
It's the mass of a object on its velocity (the velocity is a vector and as result of multiplication of a scalar (mass) on a vector (velocity) you get a vector (momentum). Intuitively, momentum is the property of a body which enables it to resist a force.
Momentum is the product of mass and what of an object?
mass multiplied by velocity gives momentum.
If the velocity is constant does that mean that the impulse is the momentum?
No, constant velocity means there is no change in velocity over time. Impulse is the change in momentum, given by the force applied over a period of time. Momentum is mass times velocity, a vector quantity.
Which is not a force weight air friction resistance momentum?
Momentum is not a force. Momentum is a property of a moving object that depends on its mass and velocity. Forces, such as weight, air resistance, and resistance, act upon objects to change their momentum.
Which of these changes as the momentum of an object changes?
Momentum is defined as mass times velocity, so if the velocity changes, the momentum would naturally also change.
