Cart(m=2.0) is traveling to the right at 3.50m/s toward cart Y. Cart Y (m=9.0kg) is traveling to the left at 1.5 m/s. Cart X and Cart Y collide inestically. Calculate the total momentum of the two-cart system after the collision.​

During spring semester at mit, residents of the parallel buildings of the east campus dorms battle one another with large catapults that are made with surgical hose mounted on a window frame. a balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. assume that the stretching of the hose obeys hooke's law with a spring constant of 89.0 n/m. if the hose is stretched by 5.80 m and then released, how much work does the force from the hose do on the balloon in the pouch by the time the hose reaches its relaxed length? unitst 3 number-1497 the tolerance is +/-5% open show work click if you would like to show work for this question:

Could someone . i have tried to solve myself but my calculation is off

Assume this car is driven off a cliff . how many arrows of force need to be drawn in the free body diagram? assume no air resistance -five -one -three -four