7.2. Conservation of Momentum in One Dimension http://www.ck12.org
Practice
Questions
The following video shows the Mythbusters building and using various sizes of a toy called "Newton’s Cradle." Use
this resource to answer the question that follows.
https://www.youtube.com/watch?v=BiLq5Gnpo8Q
MEDIA
Click image to the left for use the URL below.
URL: http://www.ck12.org/flx/render/embeddedobject/112424- What is Newton’s Cradle?
- How does Newton’s Cradle work?
- How does a Newton’s Cradle show conservation of momentum?
Review
Questions
- A 0.111 kg hockey puck moving at 55 m/s is caught by a 80. kg goalie at rest. With what speed does the goalie
slide on the (frictionless) ice? - A 0.050 kg bullet strikes a 5.0 kg stationary wooden block and embeds itself in the block. The block and the
bullet fly off together at 9.0 m/s. What was the original velocity of the bullet? - A 0.50 kg ball traveling at 6.0 m/s due east collides head on with a 1.00 kg ball traveling in the opposite direction
at -12.0 m/s. After the collision, the 0.50 kg ball moves away at -14 m/s. Find the velocity of the second ball after
the collision. - Two carts are stationary with a compressed spring between them and held together by a thread. When the thread
is cut, the two carts move apart. After the spring is released, one cartm= 3 .00 kg has a velocity of 0.82 m/s east.
What is the magnitude of the velocity of the second cart(m= 1 .70 kg)after the spring is released? - Compared to falling on a tile floor, a glass may not break if it falls onto a carpeted floor. This is because
a. less impulse in stopping.
b. longer time to stop.
c. both of these
d. neither of these.- A butterfly is hit by a garbage truck on the highway. The force of the impact is greater on the