on the earth's surface the gravitational field strength is 10n/kg. On the surface of Mars. the gracitionational is 3.8N/kg. A robot vehicle has a weight of 2000N on Earth. What is the weight of the vehicle on mars?

magnitude and direction

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

the force represented by vector a is normal force. if the hockey puck is moving to the right, when it is hit with a significant force by the hockey stick the puck will move off in a different direction. correct on edge.