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Answer on Mechanics | Relativity Question for Mai

Question #64086
4. A 200 g mass is attached to a spring of spring constant k. The spring is
compressed 15 cm from its equilibrium value. When released the mass reaches a
speed of 5 m/s. What is the spring constant (in N/m)?

5. A 34-g bullet traveling at 120m/s embeds itself in a wooden block on a smooth
surface. The block then slides toward a spring and collides with it. The block
compresses the spring (k=100 N/m) a maximum of 1.25 cm. Calculate the mass
of the block of wood.

6. If a force of 300N is exerted upon a 60 kg mass for 3 seconds, how much
impulse does the mass experience?

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