A Catapult Fires an 800-Kg Rock with an Initial Velocity

question 6

Multiple Choice

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

• A)5.1 × 104 N s.
• B)6.1 × 104 N s.
• C)8.0 × 104 N s.
• D)5.0 × 105 N s.
• E)6.0 × 105 N s.

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