Question

A car of mass 998 kilograms moving in the positive y–axis at a speed of

Answer 1

The total momentum should come out to be  2.0 x 10^4 kilogram meters/second 

Answer 2

Answer:

Momentum in X direction = 20400 kg m/s

Explanation:

As we know that there is no external force on this system of two cars

so here the momentum of two cars will remains conserved always

So here we can say that initial total momentum of two cars in Y direction is given as

$P_y = mv_y$

$P_y = 998 (20) = 19960 kg m/s$

Now for X direction total momentum is given as

$P_x = mv_x$

$P_x = 1200(17) = 20400 kg m/s$

so here its momentum in x direction will always remains the same and its final momentum in x direction is given as

$P_x = 20400 kg m/s$