Jeopardy review mfe ch 1

Moving Right Along

I Was Framed Momentous Occasion

Gimme a Problem

1 1 1 1

2 2 2 2

3 3 3 3

4 4 4

Momentous Occasion 2

• A bowling ball with a mass of 10 kg hits a stationary bowling ball with a mass of 5 kg and gives up all of its momentum to the 5 kg bowling ball.

• The 10 kg ball was going 2 m/s. • What will the speed of the 5 kg ball be?

Back


• It will have twice the speed because momentum is conserved.

• Back


• Does anything on earth have zero momentum if you use the sun as a frame of reference?

• Back


• no

Gimme a Problem 1

• If a runner sustains a 10 m/s sprint for 150 m, how much time will the sprinter have run for?

Gimme a Problem 1

• 15 s

Gimme a Problem 2

• A Yankees fan is being chased by a Red Sox fan in the streets of Boston. The Yankees fan is running at 30 km/hr. He is chased from 6:30 pm until 7:00 pm. How far did he get chased?

Gimme a Problem 2

• 15 km

Moving Right Along 1

• An airplane travels at a rate of 400 km/hr. Its destination is 1200 km away. What is the flight duration?

• If the plane has to fly into a wind that averages 100 km/hr, what is the new flight duration?


• 3 hours• 4 hours


• How are speed and velocity different?


• Speed is just distance/time• Velocity is the same with direction


• On a distance-time graph, if the graph line curves, then you know the object being graphed has _________________?


• accelerated


What is the momentum equation?

What does momentum measure?


• Mass times velocity• How hard it is to stop a moving object


• If the earth orbits around the sun at the same speed all the time, is it accelerating? Why/ why not?


• Because it is changing direction

I was Framed 1

• If you are chasing a friend on your bike and going at the same speed and you use your bike as a frame of reference, is your friend moving?

I was Framed 1

• no

I Was Framed 2

• If you put a slinky on an escalator that is going up and the slinky stays there doing what slinkys are supposed to do (slink)….

• …then: What is its speed, in m/s? • Ps: The escalator stairs move at .8 m/s…

I Was Framed 2

• Using the earth as a frame of reference, its speed is 0 m/s

• Using the escalator as a frame of reference, its speed is .8 m/s

I Was Framed 3

• If you are on a moving sidewalk that is going 1.5 m/s and you walk with it at the same speed and in the same direction as it moves, what is your speed?

I Was Framed 3

• 3 m/s using the earth as a frame of reference

I Was Framed 4

• A deep sea diver can lose track of which way is up.

• What can she use as a frame of reference if everything around her is nothing but darkness?

I Was Framed

• Bubbles

Gimme a Problem 3

On this graph, which object has the greatest acceleration?

Gimme a Problem 3

• B

Gimme a Problem 4

On this Graph, describe, in words the motion of objects B and D.

Gimme a Problem 4

Business

Jeopardy review mfe ch 1