Question

Test yourself 3
1. A boy moves on a skateboard at a constant velocity of 3 m-s! The
combined mass of the boy and the skateboard is 40 kg. He catches a bag of
flour of mass 5 kg that is thrown to him horizontally at 6 m-s !. Determine
the velocity of the boy after catching the bag of flour. (2m-s in his original
direction
2. Two trolleys, A of mass 0,2 kg and B of mass 0,4 kg, are moving to the left
at 3 ms. The trolleys are attached by a compressed spring. The spring is
released and immediately after this trolley A moves to the left at 4 ms!
al State the principle of conservation of linear momentum.
b) Calculate the velocity of trolley B immediately after the spring is
released. (2,5 ms to the left)
c is the above collision elastic or inelastic? Explain your answer.​

Answer 1

Resposta:

isso é uma pergunta amigo?