An egg test dummy is fitted with a helmet, sealed in a plastic bag and attached...

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An egg test dummy is fitted with a helmet, sealed in a plastic bag and attached to a swing with a clamp. These items have a combined mass of 0.0900 kg. This mass is pulled back to a height of 0.550 m. The mass is then released and allowed to swing down and collide with a cement block. What is the speed (velocity) of the mass at the moment of impact? An 18000 kg freight train travelling at 1.75 m/s [E] collided with a 27000 kg freight train at rest. After the collision the freight trains stick together. What is the velocity of the freight trains after the collision? An egg test dummy is fitted with a helmet, sealed in a plastic bag and attached to a swing with a clamp. These items have a combined mass of 0.0900 kg. This mass is pulled back to a height of 0.550 m. The mass is then released and allowed to swing down and collide with a cement block. What is the speed (velocity) of the mass at the moment of impact? An 18000 kg freight train travelling at 1.75 m/s [E] collided with a 27000 kg freight train at rest. After the collision the freight trains stick together. What is the velocity of the freight trains after the collision?