Acar with a mass of 1,890 kg undergoes a uniform acceleration of 13.5 m/s2. what is the net force acting on the car?

What do you think car designers do if the damage caused by a crash test is too severe?

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

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?