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Force And Motion
Test Description: Science
Instructions: Answer all questions to get your test result.
1) Robert decideds it would be fun to jump off the back of his boat while fishing in the lake one day. After he jumps out of the boat, he notices that the boat is no longer in the same place from where he jumped. Explain Why?
A
for every action there is a equal and oppsite reaction
2) A person is on a raft. The person exerts a forceon the raft, causing the raft to move. The person also moves the oppsite direction. Why does the person and the raft moved in the oppsite direction.
A
action and reaction forces
3) Meg and Reachel each ahve bowling balls with the same mass. They both roll them as hard as they can thenmeasure the speed of the balls. Megs ball and Rachel's ball measure to have the exact
A
They applied equal amount of force
4) changes in motion are caused by...
A
unbalanced forces
5) in Swimming, you apply a force to the water to move yourself forward. The greater the water pressurethe faster you can swim. This is explained by one of Newton's laws of motion that says...
A
for every force on an object there is an equal and oppsite force.
6) The ar leaves a balloon in one direction; the car moves in the oppsite direction. There is an equal and oppsite reaction or ...
A
Newton's 3rd law of Motion
7) Marvin blows up a balloon but lets go of it . The air inside is released and the balloon goes up into the air. What happens?
A
The thrust of the air propels the balloon in the oppsite direction
8) Consider a situation where you are playing air hockey qith a friend. The table shoots small steams of air upward to keep the puck afloat and minimize friction. When you barely tap the puck forward it
A
moves with constant speed until hitting the other side
9) Why does an object in motion stay in motion unless acted in by an unbalanced force?
A
because forces are what start and stop motion
10) A train rolls to a stop along a horizontal track without the conductor applying the breaks. Explain why this occured.
A
the oppsing force of friction stopped the train
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