1. a force is directed 20 degrees from the horizontal on a 2kg object. At the top of its projectory, what is the magnitude of the force acting on the object. I said 19.6 N, because the only force acting there would be gravity, right? so 9.8*2 = 19.6 N 2. an object that weighs 3m explodes and into two pieces that weigh 2m and m. Which is the only statement that can be true? I narrowed it down to two choices 1. the pieces fly off perpendicular to one another 2. the smaller piece has a velocity two times greater than the larger piece. I chose the 2nd choice 3. A car is moving east. A second car is traveling due north. During the collision, the 2nd car has a resulting velocity due south (opposite direction). What is the only possible direction of the 1st car? A graph was given with choices that the 2nd car can move west, east, north, north west, or north east. The conservation of momentum obviously comes into play. I screwed up here and chose that it goes west.