Here's a question for you to try:
A trolley of mass 3 kg collides with a compressed spring device (attached to a wall) while moving at a speed of 4 m.s^-1 (figure 1). At the instant the spring is completely released, the trolley rebounds with a speed of 6 m.s^-1 (figure 2).
a.) Calculate the change in kinetic energy of the trolley.
b.) Is momentum conserved in this collision? Explain your...
View details ⇨