Momentum
The units of momentum are this...
What is kg*m/s OR Ns
The impulse an object undergoes is equivalent to its what?
What is change in momentum
Describe the Impulse Momentum Theorem.
The impulse-momentum theorem states that the change in momentum of an object equals the impulse applied to it.
Define an Elastic collision
What is an event when two objects completely rebound off one another. Both Momentum and Energy are conserved.
Momentum is defined as this.
What is the product of mass and velocity, or in other words, inertia in motion.
The variables that are represented in the Impulse Momentum Theorem are...
What are Force, Time, Mass, and Change in Velocity?
F*delta(t)=m*delta(v)
A loaded railway car of mass 5000kg is rolling to the right at 2m/s when it collides and sticks to an empty railway car of mass 2000 kg rolling to the left on the same track at 3 m/s. The speed and direction of the pair after the collision is...
What is 0.57m/s right.
The three types of "collisions" we have studied are...
What are elastic, inelastic, and explosion?
A deer with mass of 146 kg is running head-on toward you with a speed of 17m/s. You are going north. Find the momentum of the deer.
What is 2.5x10^3 kg*m/s south.
The impulse exerted by a force of 25N acting on a car for 3.2s is...
What is 80 N*s
A 2kg skateboard is rolling across a smooth, flat floor when a girl kicks it, causing it to speed up to 4.5m/s in 0.5s without changing direction. The average force exerted by the girl on the skateboard in its direction of motion was 6N. The initial velocity of the skateboard was...
What is 3 m/s
A boy on a 2.0kg skateboard initially at rest tosses an 8.0kg jug of water in the forward direction. If the jug has a speed of 3.0m/s relative to the ground, and the boy and skateboard move in the opposite direction at 0.60m/s. The boy's mass is...
What is 38kg.
Give me an Example of a Recoil Situation.
What is A bullet leaving a gun, a cannon and cannonball. etc.
A bullet traveling at 900m/s has a momentum of 4.5kg*m/s. The mass of this object is...
What is .005kg
A bullet hits a block with a force of 70N over a time interval of 0.3s, and a hockey stick exerts 120N of force on a puck over a time interval of 0.05s. The object that experiences the greatest impulse is...
What is the bullet with a impulse of 21N*s
A 4.0 kg soccer ball approaches a player horizontally with a velocity of 18m/s to the north. The player strikes the ball and causes it to move in the opposite direction with a velocity of 22m/s. The impulse that was delivered to the ball by the player is...
What is 160 kg*m/s to the south.
High speed stroboscopic photographs show the head of a 215g golf club traveling at 55.0m/s just before it strikes a 46g golf ball at rest on a tee. After the collision, the club travels (in the same direction) at 42m/s. Use the law of conservation of momentum to find the speed of the golf ball just after the impact.
61 m/s
Sometimes the curiosity factor at the scene of a car accident is so great it actually produces secondary accidents as a result, while people watch to see what is going on. If an 800 kg Sports car slows down to 13m/s to check out an accident scene and is rear ended by a 1200 kg pickup truck traveling at 25m/s. The bumpers of the vehicles lock and the two vehicles move off together as one unit. The vehicles move off together with a velocity of...
What is 20.2m/s
A 50 kg object moving at 10m/s and a 2.5 kg object moving at 200m/s. The object that has the most momentum is...
What is there momentum is equal.
All cars have air bags in the steering wheel and on the sides. In terms of impulse, the purpose of these air bags is to...
What is to increase the time the person undergoes the impact, in order to decrease the amount of force they experience.
When a force is exerted on an object, does a large force always produce a large change in the objects momentum than a smaller force does? Explain.
What is no, because the change in momentum = F*t, it is possible for a lage force applied over a very short time interval to change the momentum less than a smaller force applied over a longer time period.
If two cars collide, they usually do not stick together. Does this mean the collision is elastic?
What is no, some KE is converted to sound energy and some is converted to internal elastic potential energy as the cars deform, so the collision can not be elastic.