1.A bullet with a mass of 45 g is fired into a 8.3-kg block of wood...

1.A bullet with a mass of 45 g is fired into a 8.3-kg block of wood resting on a floor against a spring. This ideal spring (k = 76 N/m) has a maximum compression of 28 cm. What was the initial speed of the bullet?

2.Two common and identical carts are used to perform an experiment. Cart A is pushed toward the stationary cart B with a velocity of 2.6 m/s. After the collision, cart A bounces back with a speed of 0.8 m/s and cart B moves of with a speed of 3.4 m/s. Why is this not possible?

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Expert Solution

also final energy can be equal or less than initial enegry but in this case it is greater than initial energy which is not possible in any physical phenomenon and hence this collision is not possible.

genius_generous answered 1 year ago

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