Linear Motion

Which of the following situations has an equal distance and displacement?

• John runs one lap around a track.

• Susan walks to school and back.

• Greg runs a 100 m sprint.

• A car drives in a full circle around a round about.

Acceleration is...

• the change in position

• how fast your are going

• the change in velocity

• the rate of change of velocity

Tags

NGSS.HS-PS2-1

If a horse is running with a negative velocity and a negative acceleration, which of the following is true?

• The horse is slowing down.

• The horse is speeding up.

• The horse is stopped.

• The horse is changing direction.

Tags

NGSS.HS-PS2-1

A flat piece of paper and a rock are dropped from the height of 1 m. Which of the following are true? Select all that apply.

• They will always hit the ground at the same time.

• They will hit the ground at different times in some situations.

• In a vacuum they will hit the ground at the same time.

• They will have the same acceleration if there is no air resistance.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

In free fall...

• Objects move with a constant velocity

• Objects move with a constant acceleration

• Objects do not move at all

• Objects move with an increasing acceleration

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

When a person throws an object in the air, its velocity on the way up is...

• positive

• negative

• zero

Tags

NGSS.MS-PS3-1

When a person throws an object in the air, its acceleration at the peak height is...

• positive

• negative

• zero

Tags

NGSS.HS-PS2-1

When a person throws an object in the air, its velocity at the peak height is...

• positive

• negative

• zero

A person walks 6 m west, 3 m, east and 2 m west. What is his total displacement?

• 11 m

• 3 m

• 6 m

• 5 m

A bird flies with an average velocity of 13.4 m/s for 92 m in a straight line. How much time does it take the bird to fly the 92 m?

• 7 s

• 6.9 s

• 0.15 s

• 13 s