A60.0 kg girl stands up on a stationary floating raft and decides to go into shore. she dives off the 180 kg floating raft with a velocity of 4.0 m/s [w]. ignore the substantial friction real objects in water experience.
a) what is the momentum of the girl as she is diving?
b) what is the momentum of raft as the girl is diving?
c) what is the final speed of the raft just after the girl dives?

Which quantities are scalars? choose all that apply a. distance b. speed c. acceleration d. velocity

Imagine you work as a consultant, and your daily job involves listening to the constructive criticism of others. as part of your job, you must listen to opposing viewpoints to make important decisions. in this activity, you are a consulting dam engineer. you must make a decision about four different dams; should they be repaired, taken down, or left alone? you will listen to contrasting opinions about what should be done with the dams before you make the final decision. as the consulting dam engineer, what do you decide to do with this dam? explain your reasoning. by making your decision, did you support the opinions of the mayor and/or the dam safety official? why or why not? (site 1)

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?