A 0.14-kg baseball is dropped from rest from a height of 2.0 m above the ground. What is the magnitude of its momentum just before it hits the ground if we neglect air resistance?
A) 0.28 kg m/s
B) 0.88 kg m/s
C) 0.44 kg m/s
D) 0.62 kg m/s
E) 1.4 kg m/s
Question 2
A plane moving 200 m/s horizontally fires a projectile with speed 50 m/s in a forward direction 30.0 below the horizontal. At that instant, what is the speed of the projectile with respect to a stationary observer on the ground?
A) 245 m/s
B) 250 m/s
C) 268 m/s
D) 293 m/s