Intro to 1 D motion notes check

What does one-dimensional motion mean?

• only positive values for displacement

• traveling in only direction, x or y, not both at the same time

• movement that can represented by a one number scalar

• all vectors describing motion have the same value for direction

A car rounding a curve at a constant 50 mph would have no acceleration.

• True

• False

An object is slowing down if...

• the acceleration is negative

• the velocity is negative

• the acceleration is positive

• the acceleration and velocity have opposite signs

The speedometer on a car generally shows...

• average velocity

• instantaneous speed

• average speed

• instantaneous velocity

Tags

NGSS.MS-PS3-1

If the velocity of an object is negative...

• it is speeding up

• it is slowing down

• it is moving in the negative direction

• it is traveling backwards

The rate of change in velocity is called ...

Tags

NGSS.HS-PS2-1

Which of the following is a scalar quantity?

• acceleration

• speed

• velocity

• displacement

Which is the correct formula for acceleration?

• A

• B

• C

Tags

NGSS.HS-PS2-1

What is velocity?

• The total distance traveled by an object
• The distance from start to end, including the direction
• How fast an object travels
• The speed at which an object travels plus its direction

Which of the following is not a unit of velocity or speed?

• mph

• m/s

• grams/min

• ft/min