Question

Dr. Knotts's kids are chasing each other through the yard. Arlo is in the lead and Greyson is chasing him from behind. Arlo has a mass of 13.1 kg and is running at $1.08 \frac{m}{s}$. Greyson has a mass of 19.5 kg and is running in the same direction at $1.58 \frac{m}{s}$. After they run into each other, Greyson has a velocity of $1.18 \frac{m}{s}$ in the same direction he was already moving. How fast is Arlo moving just after they collide? $v_{Arlo} = \text{____} \frac{m}{s}$ What is the total kinetic energy of the system before the collision? $KE_{initial} = \text{____} J$ What is the total kinetic energy of the system after the collision? $KE_{final} = \text{____} J$ Is this collision considered elastic, inelastic, or both? $\circ$ Inelastic $\circ$ Elastic $\circ$ Both

          Dr. Knotts's kids are chasing each other through the yard. Arlo is in the lead and Greyson is chasing him from behind. Arlo has a mass of 13.1 kg and is running at $1.08 \frac{m}{s}$. Greyson has a mass of 19.5 kg and is running in the same direction at $1.58 \frac{m}{s}$. After they run into each other, Greyson has a velocity of $1.18 \frac{m}{s}$ in the same direction he was already moving.
How fast is Arlo moving just after they collide?
$v_{Arlo} = \text{____} \frac{m}{s}$
What is the total kinetic energy of the system before the collision?
$KE_{initial} = \text{____} J$
What is the total kinetic energy of the system after the collision?
$KE_{final} = \text{____} J$
Is this collision considered elastic, inelastic, or both?
\(\circ\) Inelastic
\(\circ\) Elastic
\(\circ\) Both

Dr. Knotts's kids are chasing each other through the yard. Arlo is in the lead and Greyson is chasing him from behind. Arlo has a mass of 13.1 kg and is running at 1.08 (m)/(s). Greyson has a mass of 19.5 kg and is running in the same direction at 1.58 (m)/(s). After they run into each other, Greyson has a velocity of 1.18 (m)/(s) in the same direction he was already moving.
How fast is Arlo moving just after they collide?
vArlo = (m)/(s)
What is the total kinetic energy of the system before the collision?
KEinitial = J
What is the total kinetic energy of the system after the collision?
KEfinal = J
Is this collision considered elastic, inelastic, or both?
∘ Inelastic
∘ Elastic
∘ Both

Added by Lisa S.

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