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Copy of Momentum Unit Quiz (6/7/2024)

Last updated over 1 year ago
21 questions
In the realm of physics, momentum is a crucial and fascinating concept. Conceptually speaking, momentum can be defined as mass in motion. In mathematical terms, momentum (“p”) is computed as the product of an object's mass (“m”) and its velocity (“v”). Therefore, the formula for momentum is given as p = m x v. Momentum is a vector quantity, thus it has both magnitude and direction. For example, a 3000-kg truck moving north at 20 meters per second and a tiny 0.05-kg hummingbird flying south at 11 meters per second both possess momentum. Although the hummingbird flutters speedily, the truck, boasting a larger mass, has greater momentum. In an isolated system, momentum is conserved. This is articulated in the law of conservation of momentum, which states that the total momentum of objects interacting with each other remains constant before and after the interaction, providing no external forces act upon them. This law has immense implications in analyzing events ranging from colliding galaxies to bouncing billiard balls. One must note that mass, aiming to remain stationary, resists changes to its state of motion. Hence, objects with substantial momentum (i.e., high mass or speed) are harder to stop. Ultimately, understanding momentum equips us with a deeper comprehension of how and why objects move, laying a solid foundation for aspiring physicists and curious minds alike.
1

A football and a tennis ball are moving at the same speed. Which has more momentum and why?

1

Suppose m1 and m2 (m1 ≠ m2) are seen traveling at the same velocity v. Whose momentum is greater?

1

Which of the following are vector quantities in momentum calculations?

1

What happens to the total momentum of a system if no external force acts on it?

1

Match the given quantities to the unit that best describes it

Draggable itemCorresponding Item
Mass
Kilogram (kg)
Velocity
Meters/second (m/s)
Momentum
Kilogram meters/second (kg.m/s)
1

Match the momentum scenarios to their corresponding formulas

Draggable itemCorresponding Item
No external force applied
Final Momentum = 0
A moving object of mass (m) brought to rest
Momentum Before Collision = Momentum After Collision
Collision between two objects
Initial Momentum = Final Momentum
1

What is momentum a product of?

1

If an object has no momentum, what can we say about its motion?

1

If the net external force on an object is zero, what happens to the momentum of the object?

1

What is the unit of momentum in the International System (SI)?

1

If the force acting on a body remains constant, how will an increase in mass affect the body's momentum?

1

A 2kg object is moving with a velocity of 3m/s. What is its momentum?

1

A car of mass 1000kg is moving at a velocity of 20 m/s. What is the momentum of the car?

1

An object of mass 3kg is moving with a velocity of 5m/s in positive x direction. Another object of 2kg is moving with a velocity of 4m/s in the opposite direction. What is the net momentum?

1

What is the momentum if the mass of the object is 10kg and its velocity is -2m/s?

1

If a ball weighs 2kg and is moving at a speed of 3m/s, what is its momentum?

1

If a 4kg object is stationary, what is its momentum?

1

A 4kg object is moving at 2m/s. What will be its momentum after it doubles its speed?

1

A 10kg object is at rest. If it starts moving at a speed of 1m/s, what is its initial momentum and final momentum?

1

A 100 kg object initially at rest is hit by a second object, causing it to move at 10 m/s. What was the momentum change of the 100 kg object?

1

Calculate the impulse given by a force of 10 N acting over 3 seconds.