Cannon Mass - M
Marble
Mass m
Note: Figure not drawn to scale.
Students launch identical marbles of mass mm horizontally from a toy cannon of mass MC,
where Mc > mm, as shown above. The cannon can be adjusted to change the launch speed v of
the marble relative to the ground. Each time a marble is launched, the cannon slides backward
before coming to rest. The coefficient of kinetic friction between the cannon and the ground is u
(mu). For each launch, the students vary the launch speed v and record the distance x the cannon
slides backward for each launch speed.

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)

When an object is heated it contracts. a. true b. false

A100 kg running back runs at 5m/s into a stationary linebacker. it takes 0.5 for the running back to be completely stopped