A car is driving north of the highway. The driver speeds up to 180 m/s. It took 8 seconds for the car to speed up. What is the acceleration?

A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?

If a simple machine reduces the strength of a force, what must be increased?

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.