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Intro to Momentum quiz #2

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  • What is the formula for momentum?
    The formula for momentum is p = m*v.
  • What is the momentum of a 15 kg tire rolling down a hill at 3 m/s?
    Momentum is p = m*v = 15 kg * 3 m/s = 45 kg·m/s.
  • How do you determine which object has more momentum?
    Compare the products of mass and velocity; the object with the larger product has more momentum.
  • How do you determine which object has the greatest momentum?
    The object with the highest mass times velocity has the greatest momentum.
  • What is the momentum of a 0.250 kg cart moving at 0.400 m/s?
    Momentum is p = m*v = 0.250 kg * 0.400 m/s = 0.100 kg·m/s.
  • What is the mass of a baseball thrown at 25 m/s with a momentum of 10 kg·m/s?
    Mass is m = p/v = 10 kg·m/s / 25 m/s = 0.4 kg.
  • A 4 kg ball has a momentum of 12 kg·m/s. What is the ball's speed?
    Speed is v = p/m = 12 kg·m/s / 4 kg = 3 m/s.
  • What is the momentum of an object with mass m and velocity v?
    Momentum is p = m*v.
  • When a moving object hits another object, what happens to momentum?
    Momentum is transferred or redistributed between the objects, but the total momentum is conserved in an isolated system.
  • Do all moving objects have momentum?
    Yes, all moving objects with mass have momentum.
  • Momentum is a measure of the ________ of an object. Which term accurately completes the sentence?
    Momentum is a measure of the motion of an object.
  • Explain how two rolling bowling balls of different masses can have the same momentum.
    If the product of mass and velocity is the same for both balls, they have the same momentum even if their masses and velocities differ.
  • Does the force of a vehicle increase as its momentum increases?
    A vehicle with greater momentum requires a greater force to stop or change its motion.
  • What is the magnitude of the momentum of an object with mass m and velocity v before an event such as an explosion?
    The magnitude of momentum is |p| = m*v.
  • When a constant force acts on an object, what does the object's change in momentum depend upon?
    The change in momentum depends on the magnitude of the force and the duration of time it is applied.
  • A 36,287 kg truck has a momentum of 907,175 kg·m/s. What is the truck's velocity?
    Velocity is v = p/m = 907,175 kg·m/s / 36,287 kg ≈ 25 m/s.
  • Is the momentum of an isolated system conserved?
    Yes, the momentum of an isolated system is conserved.
  • A meteorite of mass 1500 kg moves with a speed of 0.700c. What is the magnitude of its momentum?
    Momentum is p = m*v = 1500 kg * 0.700c, where c is the speed of light.
  • What is the product of an object's speed and mass called in physics?
    The product of an object's speed and mass is called momentum.
  • Which two factors determine the momentum of an object?
    Momentum is determined by an object's mass and velocity.
  • What is the momentum of a car that is parked and not moving?
    The momentum of a parked car is zero because its velocity is zero.
  • What are the SI units used to measure momentum?
    The SI units for momentum are kilogram meters per second (kg·m/s).
  • State the SI unit for momentum.
    The SI unit for momentum is kilogram meter per second (kg·m/s).
  • What is the unit for momentum in physics?
    Momentum is measured in kilogram meters per second (kg·m/s).
  • How does velocity affect the momentum of an object?
    Momentum is directly proportional to velocity; increasing velocity increases momentum.
  • How does mass affect the momentum of an object?
    Momentum is directly proportional to mass; increasing mass increases momentum.
  • What is the SI unit of momentum?
    The SI unit of momentum is kilogram meter per second (kg·m/s).
  • How can you determine which object has the greatest momentum?
    The object with the greatest product of mass and velocity has the greatest momentum.
  • What determines which object has the greatest momentum among several moving objects?
    The object with the highest value of mass times velocity has the greatest momentum.
  • Define momentum in physics.
    Momentum is a physical quantity defined as the product of an object's mass and velocity.
  • Is momentum a vector or a scalar quantity?
    Momentum is a vector quantity; it has both magnitude and direction.
  • Does momentum have direction, or is it only a magnitude?
    Momentum has both magnitude and direction, making it a vector quantity.