A spring with spring constant k = 80,000 N/m is used to stop a 1000 kg train car. If the train car is moving at 5 m/s when it initially makes contact with the spring, what is the maximum distance the spring will be compressed? Ignore any non-conservative forces.

Ajogger accelerates from rest to 4.86 m/s in 2.43 s. a car accelerates from 20.6 to 32.7 m/s also in 2.43 s. (a) find the magnitude of the acceleration of the jogger. (b) determine the magnitude of the acceleration of the car. (c) how much further does the car travel than the jogger during the 2.43 s?

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

Could someone . i have tried to solve myself but my calculation is off