Please Help A 6.0 kg cart moves at a velocity of 12 m/s. The cart bounces off a wall causing it to rebound in the opposite direction at a speed of 18 m/s. What is the change in the earth's momentum? At for collision is 0.45 earths is the average force from the wall on the cart?

Delta t for collisions is 0.4s

Consider each of the electric- and magnetic-field orientations given next. in each case, what is the direction of propagation of the wave? a)\vec ein the +xdirection,\vec bin the +ydirection. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction b)\vec ein the -y direction,\vec bin the +x choose+ x direction- x direction+ y direction- y direction+ z direction- z direction c)\vec ein the +z direction,\vec bin the -x direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction d)\vec ein the +y direction,\vec bin the -z direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction