A Catapult Fires an 800-Kg Rock with an Initial Velocity $\degree$

Multiple Choice

A catapult fires an 800-kg rock with an initial velocity of 100 m/s at a 40 $\degree$ angle to the ground. The magnitude of the horizontal impulse the catapult receives from the rock is:

A) 5.1* 104 N $\cdot$ s.
B) 6.1 * 104 N $\cdot$ s.
C) 8.0 * 104 N $\cdot$ s.
D) 5.0 * 105 N $\cdot$ s.
E) 6.0 * 105 N $\cdot$ s.