Change in momentum of an object is given by the product of its mass and its change in speed, so because a car has much more mass than a bike, the change in speed will be much less to produce the same change in momentum as a bike at a high speed.
How can a bicycle and a car have the same momentum?
For a truck and a bike to have the same momentum, the mass of the vehicle times the velocity of the vehicle must be the same for both of them. Therefore, the lighter, less massive bike will have a much higher velocity than the truck.
Which has a greater momentum a car or a bike moving at the same speed?
Answer. Because car has more mass than bike it has higher momentum which is denoted by formula mass*speed.
Does momentum stay the same after collision?
For any collision occurring in an isolated system, momentum is conserved. The total amount of momentum of the collection of objects in the system is the same before the collision as after the collision.
Which car has the greatest momentum What is its momentum?
A moving truck has more momentum than a car moving at the same speed because the truck has more mass. A fast car can have more momentum than a slow truck. A truck at rest has no momentum at all. A truck rolling down a hill has more momentum than a roller skate with the same speed.
What happens when two objects collide?
Newton’s third law of motion is naturally applied to collisions between two objects. In a collision between two objects, both objects experience forces that are equal in magnitude and opposite in direction. Such forces often cause one object to speed up (gain momentum) and the other object to slow down (lose momentum).
What will happen if two vehicles collide?
If there are only two objects involved in the collision, then the momentum change of the individual objects are equal in magnitude and opposite in direction. Certain collisions are referred to as elastic collisions. Elastic collisions are collisions in which both momentum and kinetic energy are conserved.
Why is it easy to stop a moving bicycle than a car?
Since the total weight of the bike is far smaller than of the car’s, the amount of energy that has to be dissipated is smaller. That’s why it can be dissipated more quickly and the bike can stop faster.
Why does a rocket have such a great momentum even if it is moving at a slow speed?
Answer: Rockets provide a wonderful example of Momentum Conservation. As momentum in one direction is given to the rocket’s exhaust gases, momentum in the other direction is given to the rocket itself.
How do you find momentum?
- An object which is moving has momentum. …
- p = m • v.
- In a collision, a force acts upon an object for a given amount of time to change the object’s velocity. …
- Impulse = Momentum Change.
- F • t = mass • Delta v.
- F1 = – F2
- t1 = t2
- If A = – B.
Why is momentum conserved but not energy?
The other quantity that can be transferred in a collision is kinetic energy. … Momentum is conserved, because the total momentum of both objects before and after the collision is the same. However, kinetic energy is not conserved. Some of the kinetic energy is converted into sound, heat, and deformation of the objects.
Why is momentum not always conserved in a collision?
Momentum is not conserved if there is friction, gravity, or net force (net force just means the total amount of force). What it means is that if you act on an object, its momentum will change. This should be obvious, since you are adding to or taking away from the object’s velocity and therefore changing its momentum.
Why is momentum always conserved?
The conservation of momentum is simply a statement of Newton’s third law of motion. During a collision the forces on the colliding bodies are always equal and opposite at each instant. These forces cannot be anything but equal and opposite at each instant during collision. … Therefore the momentum is always conserved.
What is momentum in a moving car?
Momentum is a vector quantity that is the product of the mass and the velocity of an object or particle. … If you are driving the car, the momentum of the car relative to your body is zero. If you stand by the side of the road, the momentum of the car relative to you is 20,000 kg · m/s northward.
How do you explain momentum to a child?
Momentum is a term that describes the strength of a moving object. Objects that are not moving, do not have any momentum. Things that are moving have less momentum if they are lightweight or moving slowly and the opposite is true if they are moving fast or are heavy.
Does Momentum have direction?
Momentum is a derived quantity, calculated by multiplying the mass, m (a scalar quantity), times velocity, v (a vector quantity). This means that the momentum has a direction and that direction is always the same direction as the velocity of an object’s motion.