An object attached to a spring exhibits simple harmonic motion with amplitude of 10.0 cm. How far from equilibrium will the object be when the system’s potential energy is equal to its kinetic energy?

Phase changes are chemical changes. true or false

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.