Take Test A person\'s head In contact with the steering wheel in order to NOT ac

Question

Take Test A person's head In contact with the steering wheel in order to NOT acure? QUESTION dowm and begins to i the train car The speed of the car O stays the sam 9 decreases O increases QUESTION 10 Bullet in a Block Ain) 14 8g bullet is shot into a 7,166 3g wooden block standing on a ictioless surface The lock with the bulet in qu veloclty of 1.5ms Calculate the velocity of the bullet beflore strking the block QUESTION 11 A 1,565 9N man stands in the middle of a tazen pond of radus 8 5m He is unable to get to the other side becase of a luck of ction O Type here to search

Explanation / Answer

9)
Remains same.
Because friction and engine both are absent. That means both the things that could have been affected by the change of mass are absent.

10)

By law of conservation of momentum

14.8 x v = (7166.3+14.8) x 1.9
v = 921.9 m/s

11)

using law of conservation of momentum

1.3 x 4.5 = (1565.9/ 9.8) x v

v = 0.0366 m/s

t = dist/speed = 8.5 / 0.0366 = 232.24 sec

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