A body whose momentum is constant

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Sign in Open App. How much force acts on body whose momentum is constant i. Verified Answer. Force is the rate of change of momentum. So, momentum is constant when force is zero.

A body whose momentum is constant

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This action cannot be undone. This will permanently delete All Practiced Questions. A force of 50 dynes is acted on a body of mass 5 g which is at rest for an interval of 3 seconds, then impulse is. These forces are represented in magnitude and direction by the three sides of a triangle ABC as shown. The particle will now move with velocity.

The learning objectives in this section will help your students master the following standards:. Using the example of football players, point out that both the mass and the velocity of an object are important considerations in determining the impact of collisions. The direction as well as the magnitude of velocity is very important. In equation form, linear momentum p is. A large, fast-moving object has greater momentum than a smaller, slower object. Momentum is a vector and has the same direction as velocity v.

A body whose momentum is constant

So far, we have looked at the angular momentum of systems consisting of point particles and rigid bodies. We have also analyzed the torques involved, using the expression that relates the external net torque to the change in angular momentum. In this case, we can introduce the law of conservation of angular momentum. The angular momentum of a system of particles around a point in a fixed inertial reference frame is conserved if there is no net external torque around that point:. Any of the individual angular momenta can change as long as their sum remains constant. This law is analogous to linear momentum being conserved when the external force on a system is zero. The net torque on her is very close to zero because there is relatively little friction between her skates and the ice.

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Odisha Amin. A : An object slips less on a rough surface than a smooth surface. Bihar Upper Primary Teacher. BRO Vehicle Mechanic. Repeaters Course for JEE - Bihar Police Prohibition Constable. RRB Group D. This means that the body must have a constant velocity. KVS Librarian. BPSC Asst. Canara Bank PO. Subtopic: Application of Laws.