You need to know the coefficient of static friction and the coefficient of moving friction for both objects. The solution involves solving a differential equation so the math is non-trivial.
velocity
V=at. If you figure out the velocity of an object accelerating at 1 g for a year, you will get a velocity that is almost the speed of light (non-relativistically of course).
That's the object's "momentum".
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To calculate the velocity after a perfectly elastic collision, you need to apply the principle of conservation of momentum and kinetic energy. First, find the initial momentum of the system before the collision by adding the momenta of the objects involved. Then, find the final momentum after the collision by equating it to the initial momentum. Next, solve for the final velocities of the objects by dividing the final momentum by their respective masses. Finally, make sure to check if the kinetic energy is conserved by comparing the initial and final kinetic energy values.
Stationary object refers to an object that is not moving
if the objects distance travelled and time is given then speed=distance/time eg- distance travelled 50 mtrs time taken 5 seconds speed 50/5 =10m/s velocity=u(initial velocity 0 for free falling objects) + at(acceleration x time)
Gravitational forces between objects depend only on their masses and the distance between them. Velocity has no effect.
velocity
You need to know the distance traveled and the time it took to travel that distance.
Acceleration is an object's change in velocity divided by its change in time. So: acceleration=(final velocity - initial velocity)/(final time - initial time)
Calculate the average velocity for the objects.
0 velocity 0 acceleration The forces on the object are balanced: it is in equilibrium. (The forces are balanced on any object with 0 acceleration, even if it is moving.)
That is called speed or - if the direction is relevant - velocity.
V=at. If you figure out the velocity of an object accelerating at 1 g for a year, you will get a velocity that is almost the speed of light (non-relativistically of course).
This describes the average speed. If there is a direction specified that the distance has moved, then it will be a vector, and called average velocity.
friction can not move stationary objects, it just opposes the relative motion between them.