Momentum
Calculate the momentum of a .2 Kg mass traveling at 12 m/s to the right.
2.4 Kg m/s
How do we define impulse?
Impulse is a change in momentum of an object.
An object, initially travelling at 5 m/s, experiences a change in momentum of 25 Kg m/s. What is the impulse on the object?
Impulse is the same as change in momentum. It experiences an impulse of 25 N x s or 25 kg x m/s.
The same as the initial. The momentum is conserved. 400 Kg m/s
The Name of the artist famous for his painting of sunflowers
Vincent Van Gogh
Which 3 zodiac signs are summer signs?
Cancer, Leo, and Virgo
Which has more momentum, a 1 Kg feather going 8 m/s or a .2 Kg feather going 45 m/s?
The .2Kg feather
If you double the impulse on an object how will its change in momentum change?
The change in momentum is the same quantity as the impulse. If you double one you double the other. It will double.
A 2 Kg object feels a force of 5 N for 10 s. What is the change in momentum of the object?
50 N x s
50 kg x m/s
A 2 Kg mass is moving at 10 m/s to the right. It collides with a 4 Kg mass that is at rest. Both objects are on a frictionless surface. After the collision the 2 Kg object is at rest. What is the velocity of the 4 Kg mass after the collision?
5 m/s (R)
The name of the Grinch's dog
Max
What is the name of the famous astronomer called out in Queen's song "Bohemian Rhapsody"?
Galileo
Calculate the momentum of a 2 Kg object moving at 5 m/s to the left
Two eggs of the same mass are dropped from the same height. One egg is caught in a bed of cotton. The other eggs is allowed to hit the ground. Which egg is more likely to break and why (reference the impulse-momentum theorem)
The egg that hits the ground. The change in momentum of the eggs are the same. The time of impact is much shorter for the egg that hits the ground and so the average force is much higher.
A 2 Kg mass is initially moving at 4 m/s (R). It feels a force of 13 N for 5 seconds. What is the final velocity of the mass?
36.5 m/s (R)
A 2 Kg mass moving at 12 m/s (R) collides with a second mass moving at 5 m/s (R). After the collision the masses stick together. If their final velocity is 6.8 m/s (R), what is the mass of the second object?
5.78 kg
The animal that you would find on the logo of any Porsche.
Horse
When was Mariah Carey's "All I want for Christmas is You" released?
1994
A 4 Kg mass is moving at 3 m/s. What mass needs to move at 10 m/s to have the same momentum as the 4Kg mass?
1.2 Kg
During a car crash a seatbelt is designed to stretch a little bit. Why do engineers design the seatbelts this way in terms of the impulse-momentum theorem?
The longer you allow the seatbelt to apply a force the lower the average force will be. By letting the seatbelt stretch a little elongates the time and reduces the force on your chest.
A .5 Kg object is traveling at 4 m/s right. A force acts on the mass and causes it to travel at 3 m/s left. The force acted for .5 seconds. What is the force felt by the mass?
-7N OR 7N (L)
A 3 Kg mass is moving right at some initial velocity. It runs into an initially stationary 2 Kg mass. After they collide the 3 Kg mass is at rest and the 2 Kg mass is traveling at 5 m/s (R). What was the initial velocity of the 3 Kg mass?
3.33 m/s (R).
These two countries share the longest international border
U.S.A and Canada
If you were to use the unit "mickeys" to measure something, what would that be?
The speed of a computer mouse
Mass A has a momentum of 10 Kg m/s. Mass B has a momentum of 20 Kg m/s. Mass B is twice the mass of mass A. What multiple of mass A's velocity is mass B moving at?
It is moving at the same velocity (1x the speed of A)
You want to close an open door by throwing either a 400-g lump of clay or a 400-g rubber ball toward it. You can throw either object with the same speed, but they are different in that the rubber ball bounces off the door while the clay just sticks to the door. Which projectile will apply the larger impulse to the door and be more likely to close it? Why will that object have a larger impulse?
The bouncy ball. It not only loses all of its initial momentum it gains momentum in the opposite direction. This results in a larger momentum change and so a larger impulse.
A 2Kg object moving to the right collides with a 4 Kg object moving to the left. The 4 Kg object experiences an impulse of 105 N x s or 105 kg x m/s from the 2Kg mass. What is the impulse felt by the 2Kg mass from the 4 Kg mass?
-105 Ns or -105 kg x m/s.
Equal and opposite impulse. The collision times are the same and the forces are equal and opposite (3rd law).
A 80 kg student on ice skates stands at rest on a frictionless frozen pond holding a 35 kg mass. The student throws the barbell to the right with a velocity of 7 m/s. What is the final velocity of the student?
3.06 m/s (L)
-3.06 m/s
The length of the 100 Years War between England and France over succession to the French Throne
116 years
What is the name of the largest desert in the world?
Antarctic Polar Desert