Dodgem car A collides dodgem car B and imparts an impulse of 350Ns NORTH on it. . If dodgem car B was traveling with a momentum of 150Ns SOUTH before the collision, what magnitude of momentum does dodgem car B have after the collision?

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative

The ability to make things happen is also called a. heat b. force c. matter d. energy

Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign