Momentum and Energy
On this worksheet you will be investigating the relationships between momentum and energy.
= 19 N and F
= -13 N then calculate the impulse delivered to a 3-kg mass during the 5 seconds graphed above.
38.5 N sec
51.5 N sec
-0.5 N sec
-1 N sec
-13.5 N sec
If the object's initial velocity in
was 7.7 m/sec, what will be its final velocity at the end of these 5 seconds?
What was the magnitude of the average force acting on the 3-kg mass in
during the 5 seconds displayed on the graph?
A 7.7-gram bullet moving at 290 m/sec travels through a block of wood and emerges out the other side moving at 210 m/sec. If it takes 26 µsecs (1 µsec = 1 x 10
seconds) for the bullet to bore through the wood, what average force did the wood exert on the bullet?
1.48 x 10
6.22 x 10
8.59 x 10
-2.37 x 10
During target practice, a man shoots a 7.7-gram bullet with a horizontal velocity of 210 m/sec at a 1.5-kg wooden block balanced on the top of a 1.3-meter tall fence post. If the bullet embeds in the block, how fast will the block-bullet be knocked off the post?
After being knocked off, how far from the base of the fence post will the block in
hit the ground?
A second 7.7-gram bullet is fired at another 1.5-kg block which is initially at rest on a table. The bullet embeds in the block resulting in the block sliding 170 centimeters before coming to a stop. The coefficient of friction between the block and the table's surface is µ = 0.374.
How much work will the friction between the table and block do on the block while bringing it to a stop?
How fast was the original bullet in
travelling before it struck the block?
As shown in the diagrams provided below, a ball of mass 1 kg is originally moving along the x-axis with a velocity of 13 m/sec towards the origin. As it approaches the origin, it delivers a glancing blow to a stationary 2-kg mass. After the collision, the 1-kg ball continues traveling towards the left, into the second quadrant, at a reduced speed of 5 m/sec at an angle of 37º above the negative x-axis.
What is the final momentum of the 2-kg mass after the collision?
9 kg m/sec
19 kg m/sec
3 kg m/sec
9.5 kg m/sec
6.5 kg m/sec
Within the system, what fraction of the 1-kg ball's original KE remains after the collision?
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