Physics
Physics, 22.10.2020 02:01, ytalbot

A boy is running to the east and jumps into a stationary boat in a lake. Once the boy lands in the boat, the boat moves to the east. Which best compares the initial momentum of the boy with the final momentum of the boy/boat system?

The initial momentum of the boy is zero because the velocity cancels with the mass of the boy.
The initial momentum of the boy is greater than the boy/boat because the boy has a greater velocity than the boat.
The initial momentum of the boy is less than the boy/boat because the boy has less mass than the boat.
The initial momentum of the boy is equal to the boy/boat because the final velocity of the boat is less than the initial velocity of the boy.

answer
Answers: 3

Other questions on the subject: Physics

image
Physics, 22.06.2019 05:30, iiwolfiexuni
Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine
Answers: 1
image
Physics, 22.06.2019 13:30, sukiyoshi10
Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ΒΊc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in Γ—10^{-3} βˆ’3 m)
Answers: 1
image
Physics, 22.06.2019 19:30, diyagawande
Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.
Answers: 1
image
Physics, 23.06.2019 02:30, roseemariehunter12
Ball bearings are made by letting spherical drops of molten metal fall inside a talll tower-called a shot tower- and solidify as they fall. a-if a bearing needs 4.0 s to solidify enough for impact, how high must the tower be? b- what is the bearing's impact velocity?
Answers: 3
Do you know the correct answer?
A boy is running to the east and jumps into a stationary boat in a lake. Once the boy lands in the b...

Questions in other subjects: