What exactly is momentum? If a momentum is increased for a car, will the car go faster?

Answer 1

Momentum is the amount of energy behind the object, not the velocity. A slow moving freight train takes a long time to stop because it has a lot of momentum. A racecar can practically come to an immediate stop (compared to a train) because it has less momentum.

Answer 2

Momentum is a force that a body has in movement. The mass of the body is essential to the calibration of momentum.
So if the body is a pebble, the momentum is not very strong visa vi another force like a baseball in flight on earth. A piece of dust would be very much weaker than a pebble in movement at the same speed and next to nothing compared to our Sun's momentum.

Answer 3

Momentum is mass times velocity. It is different from (kinetic) energy (which is 0.5 x mass x velocity^2).
Momentum is directional (a vector). So, momentum can change if there is a change in mass (e.g. the back seat driver is ejected upwards, or a meteorite falls straight down into the car) or a change in velocity (e.g. apply the brakes, step on the accelerator, change the direction of travel with or without a change in speed).
Momentum is conserved, unless a force is acting somewhere.
An increase in momentum can be brought about by an increase in mass or velocity.

Answer 4

Momentum is a driving force of an object, such a car. The car will continue to gain momentum going down a hill due to gravity, but if the car starts going up a hill, it loses momentum and therefore will sooner or later will stop and roll back due to the laws of motion. (An object in motion will continue in motion until a force acts the object, in this case gravity.)

Answer 5

Momentum is the derivative of Kinteic Energy with respect to v-:

K.E. = 1/2 m v^2
Momentum = m v

Velocity is the rate of change of displacement with time, i.e. ds / dt = v

Ignoring relativistic speeds (which a car cannot achieve anyway) an increase in momentum must mean an increase in velocity, otherwise it has gained mass somehow (which is unlikely).

Answer 6

Isnt momentum the change in speed and direction? So technically the cars momentum can change but just change direction, not speed.

Answer 7

momentum = mass x velocity
So yes, if the car's momentum increases (and the mass stays the same) its velocity increases.

Answer 8

the car or terrain creates the momentum of how fast the car will goif the car goes up the hill faster then it will go down the hill even fast than would be with a slower car