1123 Words4 Pages

Introduction

Momentum is a vector quantity defined as the product of the mass and velocity of a body and is measured in kg.m.s. Momentum is conserved because when objects collide, equal forces are exerted on the objects but in opposite directions. The time for which the forces act is the same for both objects so the change in momentum must also be the same for both objects. This therefore means that if one object loses momentum, the other object must gain an equal amount of momentum. The total momentum remains the same.

The law of conservation of momentum states that the total linear momentum of an isolated system remains constant. This means that momentum before a collision should equal momentum after the collision pbefore=pafter mxv before= mxv after

Investigative Question

How can you make use of a trolley and a ticker timer to prove that the law of conservation of momentum that states that momentum before a collision will equal the momentum after a collision is true?

Hypothesis

If mass pieces are used to create a collision on the trolley connected to a ticker tape going through a ticker timer and going down a reasonably frictionless ramp, then calculations of momentum before the collision and after the collision should turn out to be equal.

Aim

To prove the law of conservation of momentum through the use of a trolley and a ticker timer.

Apparatus

• Dynamics trolley- 0.85kg

• 4 mass pieces of 0.25kg, 0.5kg, 1kg and 1.5kg

• Ticker timer- 50Hz

• Ticker tape

•

Momentum is a vector quantity defined as the product of the mass and velocity of a body and is measured in kg.m.s. Momentum is conserved because when objects collide, equal forces are exerted on the objects but in opposite directions. The time for which the forces act is the same for both objects so the change in momentum must also be the same for both objects. This therefore means that if one object loses momentum, the other object must gain an equal amount of momentum. The total momentum remains the same.

The law of conservation of momentum states that the total linear momentum of an isolated system remains constant. This means that momentum before a collision should equal momentum after the collision pbefore=pafter mxv before= mxv after

Investigative Question

How can you make use of a trolley and a ticker timer to prove that the law of conservation of momentum that states that momentum before a collision will equal the momentum after a collision is true?

Hypothesis

If mass pieces are used to create a collision on the trolley connected to a ticker tape going through a ticker timer and going down a reasonably frictionless ramp, then calculations of momentum before the collision and after the collision should turn out to be equal.

Aim

To prove the law of conservation of momentum through the use of a trolley and a ticker timer.

Apparatus

• Dynamics trolley- 0.85kg

• 4 mass pieces of 0.25kg, 0.5kg, 1kg and 1.5kg

• Ticker timer- 50Hz

• Ticker tape

•

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