What happens after a thruster is fired to push a spacecraft a. the spaceship will not move due to air resistance b. the spaceship will not move because it only works on earth c. the spaceship will move and will not stop until it is stopped by an equal and opposite force d. the spaceship will move and then slowly come to a stop on its own

Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1

What causes the formation of ocean currents?

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