They move with a speed of 3 ms^-1.
They move with a speed of 3 ms^-1.
10,000
7,500 Kg-m/s
10,000 kg-m/s
10,000 kg-m/s
10,000 kg-m/s
Law of Conservation of Momentum: The total momentum after the collision is equal to the total momentum before the collission.
Their combined momentum was 40,000 kg-m/s: 2000kg X 20 m/s= 40000 kg-m/s.
To find the final speed after the collision, you would need to consider conservation of momentum in an isolated system. If the collision is perfectly elastic, you can use the equation: m1v1i + m2v2i = m1v1f + m2v2f. With Car 2 initially at rest (v2i=0) and Car 1 moving at 20 m/s (v1i=20 m/s), you can solve for the final velocity of both cars.
The "C" stands for "Collider" For something to collide there has to be a second something moving in a different direction to collide with. The contents of the two beams moving in opposite directions collide.
20 kg-m/s