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The Impulse of a force

Impulse is a crucial concept in physics, representing the change in an object's motion when a force is applied over time. It's calculated as the product of force (F) and time (t) - Impulse = Ft. Although impulse lacks special symbols or units, it is commonly expressed in newton-seconds (Ns). Impulse is closely related to momentum, as it reflects the change in momentum of an object. For instance, a footballer applying 120 N of force for 0.3 seconds can significantly alter the speed of a 430g ball. This relationship illustrates the practical applications of impulse in sports and beyond.

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The Impulse of a force

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  1. The Impulse of a force

  2. What is Impulse ? When a force acts on an object, it can change the motion of the object. The change will depend on the size of the force and how long a time the force acts for. The impulse is the size of the force ( F ) multiplied by the time ( t ) for which it acts. Impulse = Ft

  3. More about Impulse Impulse has no special symbol. Impulse has no special units. We use newton seconds ( Ns )

  4. Impulse and Momentum Impulse is important because it is linked to momentum. Ft = mv-mu Impulse = change in momentum

  5. An example A footballer taking a penalty kick strikes the ball for a time of 0.3 seconds using an average force of 120 newtons. If the mass of the ball is 430g, find the speed of the ball immediately after it is kicked.

  6. An example A footballer taking a penalty kick strikes the ball for a time of 0.3 seconds using an average force of 120 newtons. If the mass of the ball is 430g, find the speed of the ball immediately after it is kicked. t = 0.3 s F = 120 N m= 430 g = 0.43 kg v = ? u = 0

  7. An example A footballer taking a penalty kick strikes the ball for a time of 0.3 seconds using an average force of 120 newtons. If the mass of the ball is 430g, find the speed of the ball immediately after it is kicked.

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