A man of mass 70 kg and a boy of mass 30 kg dive of the end of a boat, of mass 150 kg with a horizontal velocity of 2 m/s relative to the boat. If initially, the boat is at rest, find its velocity
Answers
When the boat is initially at rest its velocity is Vb = - 1.33 m/s.
Explanation:
Given data:
Mass of the man "M" = 70 Kg
Mass of the boy "m" = 30 Kg
Mass of the boat "Mb"= 150 Kg
Relative velocity of jump with boat "v" = 2 m/s
Solution:
Now applying the law of conservation of momentum.
( m + M ) v + Mbvb = 0
( 30 + 70) 2 + 150 Vb = 0
Vb = - 1.33 m/s
Hence when the boat is initially at rest its velocity is Vb = - 1.33 m/s.
Also learn more
A large truck and a car, both moving with a velocity of magnitude v, have a head-on collision and both of them come to a halt after that. If the collision lasts for 1 s: (a) Which vehicle experiences the greater force of impact? (b) Which vehicle experiences the greater change in momentum? (c) Which vehicle experiences the greater acceleration? (d)Why is the car likely to suffer more damage than the truck?
https://brainly.in/question/1301743