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5 June, 20:17

An object with a mass of 1.5 kg changes it's velocity form + 15 m) s to + 22 m/s during a time interval of 3.5 seconds. What impluse was delivered to object?

A) 3.0 N • s

B) 11 N • s

C) 25 N • s

D) 56 N • s

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  1. 5 June, 23:46
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    The impulse delivered to the object is 11 Ns.

    Explanation:

    Impulse is defined as net force acting on any object for a given time interval. As per Newton's second law of motion, the force acting on any object is equal to the product of mass and acceleration exerted on the object. Thus the change in force with time is defined as impulse. Impulse can be calculated as the product of force over the change in time.

    Force of the object = Mass * acceleration = 1.5 * (22-15) / 3.5 = 3 N.

    So the force is 3 N and it is acting on the time interval of 3.5 s.

    Thus the impulse is FΔt = 3 * 3.5 = 11 N. s.

    So the impulse acting on the object is 11 Ns.
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