Answer and Explanation: A body cannot have momentum withouthaving energy. This is because only moving objects havemomentum, and an object in motion always haskinetic.
Keeping this in consideration, does an object with energy always have momentum?
Yes, an object with momentum always hasenergy. If the object has momentum (mv) it must bemoving, and if it is moving it has kinetic energy.No, an object with energy does NOT always havemomentum. Since this object's velocity = 0, itsmomentum is zero.
how does the kinetic energy of a body change if its momentum is doubled? K.E. = 1/2 m v^2 where 'K.E.' is the kineticenergy of the body.Momentum is directlyproportional to velocity. If the momentum of anobject is doubled, but its mass does notincrease , then its velocity is doubled. IFmomentum of a body is doubled then its kineticenergy becomes 4times it's initial value.
Likewise, can a body have mechanical energy if its momentum is zero?
Answer: Momentum is the product of mass andvelocity of a body, for a body mass never bezero but velocity can be zero if a bodyis at rest, So if a body is at rest its momentumis zero but if it is in rest at a height it possessesgravitational potential energy hence mechanicalenergy.
What are the 2 different ways to write the units for momentum?
It is expressed mathematically as p = m * v and hasunits of kg m/s. The principle of conservation ofmomentum states that in an isolated system, twoobjects that collide have the same combined momentum beforeand after the collision. There are three types ofcollisions.
Related Question Answers
What are the two main forces of mechanical energy?
Mechanical energy** There are two main types of mechanicalenergy. They are motion energy and stored mechanicalenergy. Motion energy: This is the energysomething has because it is moving (eg a speeding cricketball).Why does a small lightweight car generally?
Since a small, lightweight car has lessmass (weight = mg) than a big, heavy car, it takes lessforce to accelerate it (Newton's Second Law: a =Fnet/m). This means that the engine of the smallercar will be doing less work than the engine of the biggercar to move the smaller car the samedistance.Is it possible for a machine to multiply energy or work input?
Workout is less than or equal toWorkin, or Energyout is lessthan or equal to Energyin. In other words, nomachine can be more than 100% efficient. Machinescannot multiply energy or work input. To say that amachine has a certain mechanical advantage tells you howmuch the machine multiplies input force.What do we call the quantity force distance?
A force sets an object in motion. When theforce is multiplied by the time of its application, wecall the quantity impulse, which changes the momentum of thatobject. What do we call the quantity force xdistance, and what quantity can this change? work,changes energy. Work is required to lift a barbell.How can two objects have the same momentum but different velocities?
Yes. Momentum is a vector, and the two objectshave the same momentum. This means that the direction of eachobject's momentum is the same. The fact that theobjects have the same momentum means that the product of themass and the magnitude of the velocity is the samefor each.What will be the kinetic energy of an arrow?
The formula for kinetic energy is: For anarrow, the kinetic energy is calculated by taking theweight in grains, multiplying it by the square of the velocity infeet per second, and dividing by the constant 450800.How do you find the gain in potential energy?
Calculate your object's initial potentialenergy using the following equation: potentialenergy (PE) = mass * gravity * height. Use the height and massyou measured along with 9.8 m/s2 as the constant forgravity. The result will be your initial potentialenergy.How do you calculate work?
The work is calculated by multiplying theforce by the amount of movement of an object (W = F * d). A forceof 10 newtons, that moves an object 3 meters, does 30 n-m ofwork. A newton-meter is the same thing as a joule, so theunits for work are the same as those for energy –joules.Can any object have mechanical energy?
Since, mechanical energy is the sum of kineticenergy and potential energy. And as given that,momentum of the body is zero, it means velocity of the body iszero, so it has kinetic energy equals to zero. But it mayhave potential energy. So, even if the momentum ofthe body is zero, it may have mechanicalenergy.Can any object have momentum?
Bodies that are in motion have momentum, which isa measure of how much motion an object has.Momentum is dependent on an object's mass andvelocity, and can be calculated using the following formula:p=mv, where p=momentum, m=mass and v=velocity.What is mechanical energy used for?
Mechanical energy is the sum of kinetic andpotential energy in an object that is used to dowork. In other words, it is energy in an object due to itsmotion or position, or both.Can an object have mechanical energy even if it is not in motion?
Yes, mechanical energy comprises of bothpotential energy and kinetic energy. Zero momentummeans that velocity is zero. Hence, there it no kineticenergy but the object may possess potentialenergy.What is the relationship between momentum and kinetic energy?
Dependence on Velocity: The momentum of an object is proportional to theobject's velocity - if you double its velocity, you double itsmomentum. The kinetic energy of an object isproportional to the square of the object's velocity - if you doubleits velocity, you quadruple its kineticenergy.What is the speed of a moving body doubled?
If speed is doubled, momentum will bedoubled and kinetic energy will be four times it's originalvalue.What will happen to the kinetic energy of a body if its mass is doubled?
Doubling mass doubles the kinetic energywhen velocity remains constant. And you say velocitydoes not change so yo can assume even v to be aconstant. So E=k(m). Which means kinetic energy is directlyproportional to mass.What happens if mass and velocity are doubled?
Therefore, it is safe to say that as the mass ofan object increases so does its inertia. Mass and velocityare both directly proportional to the momentum. If youincrease either mass or velocity, the momentum of theobject increases proportionally. If you double themass or velocity you double themomentum.How do you calculate momentum of a body?
In symbols, linear momentum is expressed as p =mv. Momentum is directly proportional to the object's massand also its velocity. Thus the greater an object's mass or thegreater its velocity, the greater its momentum.Momentum p is a vector having the same direction as thevelocity v.When the mass and velocity are doubled the kinetic energy will?
i.e. if mass is doubled then KE will alsobe doubled. a) If mass is doubled (2 * mass)then KE will be 2 times of initial kinetic energy. b)If mass is made half then KE will become half ofinitial kinetic energy. c) If velocity is doubled forthe same mass then KE will become four times ofinitial kinetic energy.What happens to kinetic energy when velocity is halved?
If the velocity of a moving car is halved,its kinetic energy would. If the velocity of a bodyis halved, its kinetic energy becomes one fourth askinetic energy is directly proportional to velocitysquared. 
