Does a car have momentum?
Momentum is the mass of an object multiplied by its velocity. 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.
What is the momentum of a stationary car?
Answer: B Momentum = m v Anything stationary has zero momentum. How can the momentum of an object be changed? By changing its mass, or, more usually, its velocity – i.e. by causing an acceleration. e.g. If trying to get a broken down car moving, and you push tremendously but only for a split-second, it won’t move.
When two cars one twice as heavy as the other move down a hill at the same speed compared to the lighter car?
Answer. Answer: The heavy one will have a greater momentum cause the heavier the obejct the more faster it will be and more effort you need to put to stop it.
How does the momentum of the heavier car compare to that of the lighter car?
Compared to the lighter car, the momentum of the heavier of the heavier car is TWICE as much.
What is the formula for the momentum of a car?
p = m v . You can see from the equation that momentum is directly proportional to the object’s mass (m) and velocity (v). Therefore, the greater an object’s mass or the greater its velocity, the greater its momentum. A large, fast-moving object has greater momentum than a smaller, slower object.
How is momentum conserved in a car?
During the car crash, if their external force does not exist the total initial momentum of these two cars is equal to the total momentum of these two cars. Hence, the momentum conserved in a car crash. Note:In the absence of external force, the total linear momentum is conserved in any collision.
Why is P used for momentum?
This meaning is also related to the word ‘impetus’ which is the earlier term used for ‘momentum’. The word ‘impetus’ gives the meaning as to go and rush upon which was explained by the term Petere. Hence, momentum is represented by the letter P.
What is an example of momentum in everyday life?
Some examples of momentum that are used in everyday life: In a large truck, running on the highway ( even with a small velocity ) has a very high momentum because of its large mass. An athlete running in a race with some velocity has momentum. Because an athlete running in the race is a mass in motion.
Can a stationary object have momentum?
FALSE – An object has momentum if it is moving. Having mass gives an object inertia. When that inertia is in motion, the object has momentum.
What are the factors that affect momentum are blank and blank?
Thus, momentum is dependent on the mass and velocity of the body.
What is the name of the force that starts the car rolling down the hill?
Gravity is the force that attracts all objects toward the Earth’s center. Gravity has a major effect on your vehicle when you are driving downhill or uphill.
When a car goes up on a hill it moves against gravity?
Answer and Explanation: When the car goes up the hill it is performing work against gravity. This energy comes from the combustion of petrol within the engine to turn the wheels and move the car up the hill.
Why is momentum important in cars?
Slowing Down the Effects of Momentum When that vehicle has a collision or brakes quickly, the sudden change in momentum of the car, its passengers, and any cargo can cause injuries and damage because of the force.
Does an object have momentum?
Momentum can be defined as mass in motion. All objects have mass; so if an object is moving, then it has momentum – it has its mass in motion. The amount of momentum that an object has is dependent upon two variables: how much stuff is moving and how fast the stuff is moving.
Do cars have angular momentum?
Answer : When the car starts to move clockwise it acquires angular momentum; since there are no external torques on the system (consisting of the car and bicycle wheel), conservation of angular momentum means that the wheel will acquire a counter-clockwise angular velocity, producing an equal but opposite angular …
Does speed have momentum?
Momentum is directly proportional to the object’s mass and also its velocity. Thus the greater an object’s mass or the greater its velocity, the greater its momentum. Momentum p is a vector having the same direction as the velocity v.