Forces and Motion

Segment E-F: The bus is moving at a _________________ of 5 m/s for 4 seconds.

• accelerating

• decelerating

• constant speed

• at rest

Currently, both teams have the same force. What two changes could you make the system be unbalanced and have the blue team win?

• Add another person to the blue team

• Take another green person away

• Add a green person

• Take a blue person away.

Tags

8.8

Is it balanced?

• Yes

• No

Tags

NGSS.MS-PS2-2

Which of the following is true about gravity? Select all that apply.

• Gravity is a force.

• Gravity affects all matter on Earth.

• There is no gravity in the Southern hemisphere.

• Gravity is caused by air pushing down on things.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What question were they most likely trying to answer?

• Does the mass of a car affect the distance the car travels?

• Does the distance the car travels affect the time?

• Does the force on a car affect the change in motion?

• Does the mass of a car affect the distance the car travels?

Tags

NGSS.MS-PS2-2

What would most likely happen to the motion of the box if you poured oil on the ramp?

• It will slow the box because the force of friction will be increased.

• It will speed up the box because the force of friction will be increased.

• It will slow the box because the force of friction will be reduced.

• It will speed up the box because the force of friction will be reduced.

Tags

NGSS.MS-PS2-2

A student drew the model car shown for a class project.

What was he most likely trying to model?

• The speed of a car

• The forces acting on a car

• The distance a car might move

• The things that change the size of the car

Tags

NGSS.MS-PS2-2

A student did an investigation to see how changing the mass of an object would affect the distance it would take to stop. Shown is the data from his investigation. How should he make the graph of his data?

• He should make a line graph with mass on the "X" axis and distance on the "Y" axis.

• He should make a line graph with mass on the "Y" axis and distance on the "X" axis.

• He should make a bar graph with mass on the "X" axis and distance on the "Y" axis.

• He should make a bar graph with mass on the "Y" axis and distance on the "X" axis.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

A group of students want to test the effect of balanced forces on the motion of objects with different masses. They conducted trails with 10-gram, 20-gram, and 30-gram blocks. They applied 100 Newtons of force to each side of the blocks as shown in each trial.

Which hypothesis will most likely be supported by the results of the investigation?

• When a balanced force is applied the block with the greatest mass will move fastest.

• When an unbalanced force is applied the block with the least mass will move fastest.

• When a balanced force is applied the speed of an object will not change.

• When an unbalanced force is applied the speed of an object will not change.

Tags

NGSS.MS-PS2-2

A student designed an investigation to determine what affects motion caused by unbalanced forces. Shown is her experimental design.

Is her investigation a fair test?

• No, because she has two responding (dependent) variables.

• No, because she has two manipulated (independent) variables.

• Yes, because she uses distance as a controlled variable.

• Yes, because she uses time as the responding (dependent) variable.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2