Elastic, Inelastic, Explosions, Oh My!
Identify the collision:
John Paul catches a toy midair and runs away with it.
Inelastic
Draw a model and write the equation:
Two football players have a head-on collision and grab onto each other’s uniforms. The 80 kg Pennridge Ram was moving at 3 m/s, while the 70 kg Souderton player was moving in the opposite direction at 2.5 m/s.
What is their final velocity after impact?
m1vi1-m2vi2=(m1+m2) vf
Find the answer:
Two football players have a head-on collision and grab onto each other’s uniforms. The 80 kg Pennridge Ram was moving at 3 m/s, while the 70 kg Souderton player was moving in the opposite direction at 2.5 m/s.
What is their final velocity after impact?
0.433 m/s
What is Ms. Warhurst's dog's name?
John Paul
Identify the collision:
Ms. Warhurst tosses a tennis ball for John Paul to fetch. John Paul does not catch the ball.
Explosion
Draw a model and write the equation.
A 20 gram bullet traveling at 250m/s strikes a block of wood that weighs 2kg.
With what velocity will the block and bullet move after the collision?
m1vi1+m2vi2=(m1+m2)vf
Find the answer:
A 20 gram bullet traveling at 250m/s strikes a block of wood that weighs 2kg.
With what velocity will the block and bullet move after the collision?
2.5 m/s
What college does Ms. Warhurst go to?
The University of Iowa
Identify the collision:
John Paul runs into his food bowl excitedly, causing the bowl to move.
Elastic
Draw a model and write the equation:
Hockey puck A (2 kg) travels with a velocity of 40 m/s to the right when it collides with Hockey puck B (1.6 kg), which was originally at rest. After the collision, puck A is stationary.
What is the final velocity of puck B after the collision?
m1vi1+m2vi2=m1vf1+m2vf2
Find the answer:
Hockey puck A (2 kg) travels with a velocity of 40 m/s to the right when it collides with Hockey puck B (1.6 kg), which was originally at rest. After the collision, puck A is stationary.
What is the final velocity of puck B after the collision?
50 m/s
Ms. Warhurst said her fiance is a musician, what instrument does he play?
Percussion, he plays multiple!
Identify the collision:
John Paul jumps onto Ms. Warhurst, she catches him, and they both fall into bed.
Inelastic
Draw a model and write the equation:
Two grocery carts collide, a full one with a mass of 35 kg moving East at 2 m/s and an empty one with a mass of 10 kg moving West at 3 m/s. After the collision the full cart is moving East at 0.75 m/s.
What is the velocity of the empty cart?
m1vi1-m2vi2=m1vf1+m2vf2
Find the answer:
A full grocery cart with a mass of 35 kg moves East at 2m/s towards an empty cart with a mass of 10kg, the empty cart is moving West at 3 m/s. After the collision, the full cart is moving East at 0.75 m/s.
What is the velocity of the empty cart after the collision?
1.375 m/s
During her assumptions activity, Ms. Warhurst said she was very excited for a video game. What game was it?
Lego Star Wars: The Skywalker Saga
Identify the collision:
John Paul and Ms. Warhurst are playing tug, John Paul lets go, causing Ms. Warhurst to fly back.
Explosion
Draw a model and write the equation:
An 800 kg cannon mounted on wheels fires a 10 kg cannonball at 80 m/s.
At what velocity does the cannon recoil?
m1vi1+m2vi2=m1vf2+m2vf2
Find the answer:
An 800 kg cannon mounted on wheels fires a 10 kg cannonball at 80 m/s.
At what velocity does the cannon recoil?
-1 m/s
Scott Pilgrim vs. the World, Emma, Pride and Prejudice, and Spiderman: Into the Spiderverse