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What can be said of an object whose mass stays constant but its momentum is changing?
If an object's mass stays constant but its momentum is changing, then its velocity must be changing as well. This implies that there is an external force acting on the object, causing its momentum (mass multiplied by velocity) to change. This concept is described by Newton's second law of motion, which states that the rate of change of an object's momentum is equal to the force applied to it.
What figure could represent the velocity versus time graph of a motorcycle whose speed is increasing?
A straight line with a positive slope could represent the velocity versus time graph of a motorcycle whose speed is increasing.
How velocity changes with time?
Velocity can change with time based on the acceleration of an object. If an object is speeding up, its velocity increases over time; if it is slowing down, its velocity decreases over time. The rate of change in velocity with respect to time is known as acceleration.
Can a single object have kinetic energy but zero momentum?
Yes. Kinetic energy is a scalar (non-directional) and momentum is a vector. That means if you have two or more objects in motion their kinetic energies always add. But their momentums must be combined using vector addition and you might get zero. The simple case is two identical masses moving with equal but opposite velocities. Their total momentum is zero because their directions of motion are opposite. --- Yes, Take two objects of the same mass, A and B, whose velocities, VA and vb, are opposite Ke = .5(m)(VA)^2 + .5(m)(vb)^2 = Plug in some numbers, m = 1 kg, VA = 10 m/s, vb = -10 m/s .5(1)(10)^2 + .5(1)(-10)^2 = 50 + 50 = 100 -- a positive number momentum can be found using p = mva + mvb so p = (1)(10) + (1)(-10) = 10 + -10 = 0
How velocity different from speed?
Velocity is acceleration and direction put together. The velocity of something changes if either acceleration or direction changes. Speed is just the average MPH measure. Velocity is not acceleration and direction put together. In that kind of description, velocity is is speed and direction put together. Velocity is a vector, whose size is the speed.
What can be said of an object whose mass stays constant but its momentum is changing?
If an object's mass stays constant but its momentum is changing, then its velocity must be changing as well. This implies that there is an external force acting on the object, causing its momentum (mass multiplied by velocity) to change. This concept is described by Newton's second law of motion, which states that the rate of change of an object's momentum is equal to the force applied to it.
What is variable velocity?
variable velocity can be defined as a moving body whose velocity changes with time
A boat whose velocity through the water is 14 kmh is moving in a river whose current is 6 kmin relative to the riverbed The velocity of the boat relative to the riverbed must be between?
13.9 km hr
What figure could represent the velocity versus time graph of a motorcycle whose speed is increasing?
A straight line with a positive slope could represent the velocity versus time graph of a motorcycle whose speed is increasing.
What is the magnitude of force acting on a body moving with constant velocity?
Certainly not. An object has momentum on account of its motion, which depends on its mass and its velocity. Force may be involved in the object's motion, but doesn't need to be. If we let the discussion become somewhat flabby, we can imagine a constant force applied to an object, and asked what happens to the object's momentum. An object with a constant force acting on it exhibits constant acceleration in the direction of the force. In that situation, the object's speed, and therefore its momentum, are proportional to the time the force continues to act on it.
What is better getting 100000 at once or getting a penny whose sum is doubled everyday for 31 days?
Take the penny a day doubled every day. The sum would be almost 43,000,000.
When a certain number is doubled it is equal to thrice of another number and whose sum is 105. what is the absolute value of their difference?
pa answer nmn po
What is indicated by a velocity time graph that crosses the x axis?
That the object whose velocity is being graphed has reversed direction (and is now going in the opposite direction). Velocity is a vector quantity: it has both magnitude and direction.
How velocity changes with time?
Velocity can change with time based on the acceleration of an object. If an object is speeding up, its velocity increases over time; if it is slowing down, its velocity decreases over time. The rate of change in velocity with respect to time is known as acceleration.
What are tachions?
hypothetical particles whose velocity exceeds the speed of light also spelled "tachyons"
What is exactly meant by interficial velocity?
Interfacial velocity is the speed of a fluid whose movement is generated by its mass transfer from a phase to the next . Another factor that generates interfacial velocity is the bulk motion of the fluid, known as advection.
If a motorboat travels 25 km hr down a river whose velocity is 4 km hr what is the boats actual velocity?
21 km/h in the rivers frame of reference.
