4. A spring-powered dart gun has a spring constant 14 N/m. A 0.010 kg dart is placed in the gun, and the spring is compr

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4 A Spring Powered Dart Gun Has A Spring Constant 14 N M A 0 010 Kg Dart Is Placed In The Gun And The Spring Is Compr 1 (137.43 KiB) Viewed 20 times

4. A spring-powered dart gun has a spring constant 14 N/m. A 0.010 kg dart is placed in the gun, and the spring is compressed by a distance of 0.050 m. What is the speed of the dart when leaving the gun? (a) 2.8 m/s (b) 1.9 m/s (c) 3.5 m/s (d) 8.4 m/s 5. A jet is traveling horizontally due west and is steadily speeding up. What do we know? (a) the net force on the jet must be zero. (b) the net force vector on the jet must be non-zero and it points east. (c) the net force vector on the jet must be non-zero and it points west. (d) the momentum of the jet must be constant in time. 6. Which one of the following is an example of a totally inelastic collision? (a) a large piece of hail striking the side of a truck and bouncing off. (b) a baseball bat hitting a baseball into the outfield. (c) a raw egg being thrown so that it splats and sticks to a clown on a unicycle. (d) two cars crashing on the highway and bouncing away from each other.