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Answer:
The impulse experienced by the 3 kg rock is 235.44 Ns.
Explanation:
Impulse is the product of the force acting on an object and the time interval during which the force is exerted. In this case, the force acting on the 3 kg rock is the force of gravity. The gravitational force (F) can be determined using the formula F = m × g, where m is the mass of the object and g is the acceleration due to gravity (approximately 9.81 m/s²).
First, let's find the gravitational force acting on the rock:
F = m × g = 3 kg × 9.81 m/s² = 29.43 N
Now, we can calculate the impulse (I) using the formula I = F × t, where F is the force and t is the time interval:
I = F × t = 29.43 N × 8 s = 235.44 Ns
The impulse experienced by the 3 kg rock is 235.44 Ns.