Total momentum before the collision = total momentum after the collision
As a reminder, momentum is the product of velocity and mass.
To determine the speed after a collision, one can use the principles of conservation of momentum and energy. By analyzing the masses and velocities of the objects involved before and after the collision, one can calculate the speed using equations derived from these principles.
One common formula for calculating speed after a collision is the conservation of momentum equation: m1v1 + m2v2 = (m1 + m2)v, where m1 and m2 are the masses of the objects involved, v1 and v2 are their initial velocities, and v is the final velocity after the collision.
10 m/s
The momentum stays the same.
The second car will begin to move in the same direction as the first car after the collision, with a speed that depends on the masses and velocities of the two cars before the collision. Momentum conservation ensures that the total momentum of the system remains constant.
To determine the speed after a collision, one can use the principles of conservation of momentum and energy. By analyzing the masses and velocities of the objects involved before and after the collision, one can calculate the speed using equations derived from these principles.
One common formula for calculating speed after a collision is the conservation of momentum equation: m1v1 + m2v2 = (m1 + m2)v, where m1 and m2 are the masses of the objects involved, v1 and v2 are their initial velocities, and v is the final velocity after the collision.
10 m/s
The momentum stays the same.
The lighter boy will be moved backwards by a force equal to the difference in their masses.
The second car will begin to move in the same direction as the first car after the collision, with a speed that depends on the masses and velocities of the two cars before the collision. Momentum conservation ensures that the total momentum of the system remains constant.
There's more force exerted in the high speed collision.
The combined VELOCITY of two cars that crash will be somewhere between that of the individual cars. In this case, the combined speed will be less than the speed of the car that was moving before the crash.If you know the velocities and the masses, the exact speeds can be calculated using conservation of momentum.
Since momentum must be conserved, they move off at a combined speed of 5 m/s. (If the masses are different, write an equation that states that momentum is conserved: momentum before the collision equal momentum after the collision).
More kinetic energy involved.
True, the force of impact in a collision increases significantly with speed. This is because kinetic energy, which relates to an object's speed, increases with the square of the speed. So, tripling the speed of a car would result in nine times the force of impact in a collision.
It depends on their initial speeds and masses. The speed can be worked out by: mcarucar + mtruckutruck = mbothvboth where u = initial veloicty m = mass v = final veloicty remember u and v are vectors so will have direction!