(b) Since impulse = Ft, if the times are the same, the one that exerts the greater impulse must also exert the greater force. The spring exerts more force on the ball than the pillow does.
Which has more momentum a large truck moving at 30 mph or a small truck moving at 30 mph?
Which has more momentum, a large truck moving at 30 miles per hour or a small truck moving at 30 miles per hour? twice as much momentum. If the momentum of an object changes and its mass remains constant, it is accelerating (or decelerating), there is a force acting on it, its velocity is changing.
How do you solve for momentum?
Use the momentum equation p = m•v to calculate the momentum or velocity of an object if given the other quantities.
What is the momentum of a 50 kg carton that slides at 4m s?
Explanation of Solution A carton of mass 50-kg slides across an icy surface at a speed of 4 m/s. Conclusion : The momentum of a carton of given mass moving with a particular velocity is 200 kg−m/s .
Which of the following is the largest momentum?
Momentum is directly proportional to the mass and velocity of an object. A greater velocity implies more momentum. Hence, a car driving on a highway with high velocity will have the greatest momentum.
Why is it harder to stop a moving truck than a moving car even though they travel at the same speed?
A moving object can have a large momentum if it has a large mass, a high speed, or both. It is harder to stop a large truck than a small car when both are moving at the same speed. The truck has more momentum than the car. By momentum, we mean inertia in motion.
Is momentum a force Yes or no?
Even though these physical quantities look alike, there is a difference between force and momentum. Force is generally the external action upon a body, whether a pulling or pushing action. Momentum, on the other hand, is the representation of the amount of motion within a moving body.
What is the SI unit of momentum?
SI unit. kilogram meter per second (kg⋅m/s)
Is momentum equal to force?
But there are other ways to think about momentum! Force (F) is equal to the change in momentum (ΔP) over the change in time (Δt). And the change in momentum (ΔP) is also equal to the impulse (J). Impulse has the same units as momentum (kg*m/s or N*s).
What is the momentum of an 8 kg bowling ball at 2m s?
Explanation of Solution The mass of bowling ball is 8kg. Its velocity is 2ms and its recoil velocity is (−2ms) . The calculated recoil momentum is −16 kgms .
What is the impulse unit?
Impulse determines the velocity of an object after a force acts on it. This can be readily seen as a consequence of impulse being a change in momentum. Impulse has units of Newton-seconds. The SI unit of impulse is Newton-seconds. It is abbreviated as N s.
Is momentum always conserved?
In collisions between two isolated objects Newton’s third law implies that momentum is always conserved. In collisions, it is assumed that the colliding objects interact for such a short time, that the impulse due to external forces is negligible.
What causes momentum changes?
A force acting for a given amount of time will change an object’s momentum. Put another way, an unbalanced force always accelerates an object – either speeding it up or slowing it down. If the force acts opposite the object’s motion, it slows the object down.
Is momentum conserved when a ball hits a wall?
When the ball hits the vertical wall net external force remains zero due to the presence of opposite vectors which cancels out internally, and this makes linear momentum remain conserved.
What is Impulse equal to?
Impulse ( F Δ t F \Delta t FΔt ) Product of the average force exerted on an object and the time interval during which the force is exerted. Impulse is equal to the change in momentum ( Δ p \Delta p Δp ) and is sometimes represented with the symbol J.
What is true momentum?
TRUE – Momentum is calculated as the product of mass and velocity. As the speed of an object increases, so does its velocity. As a result, an increasing speed leads to an increasing momentum – a direct relationship. h.
Is momentum a change?
The change in momentum is a difference in motion. When an object is in motion, strikes, or collides with another object, the exerted force accelerates an object by varying its motion. The change in momentum is calculated using the Impulse formula or conservation of momentum. The moving object is said to be in momentum.
How do you avoid losing traction in a stop or turn?
The purpose of anti-lock brakes is to prevent your wheels from locking during a quick stop so that your brakes can continue to absorb energy and you can maintain traction. The loss of traction in a stop or turn can be avoided by: (a) driving slower, and. (b) properly using your brakes.
Which has more momentum a heavy truck or a light truck?
Q. Which has more momentum, a heavy truck moving at 30 km/hr or a light truck moving at 30 km/hr? Cannot be determined. They both have the same momentum.
Which of the two vehicles would be more difficult to stop?
Heavier objects (objects with more mass) are more difficult to move and stop. Heavier objects (greater mass) resist change more than lighter objects. Example: Pushing a bicycle or a Cadillac, or stopping them once moving. The more massive the object (more inertia) the harder it is to start or stop.
Is momentum positive or negative?
Momentum is a vector and has the same direction as velocity v. Since mass is a scalar, when velocity is in a negative direction (i.e., opposite the direction of motion), the momentum will also be in a negative direction; and when velocity is in a positive direction, momentum will likewise be in a positive direction.
Is momentum a vector or scalar?
momentum, product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction.
Who found momentum?
At this point, we introduce some further concepts that will prove useful in describing motion. The first of these, momentum, was actually introduced by the French scientist and philosopher Descartes before Newton.
What is the first law of motion called?
1. Newton’s First Law of Motion (Inertia) An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force. 2. Newton’s Second Law of Motion (Force)
What is the unit velocity?
Velocity is a vector expression of the displacement that an object or particle undergoes with respect to time . The standard unit of velocity magnitude (also known as speed ) is the meter per second (m/s). Alternatively, the centimeter per second (cm/s) can be used to express velocity magnitude.