A change in an object's position with respect to time and in comparison to the position of other objects used as reference points

• Acceleration

• Frame of reference

• Motion

A system that uses coordinates or background objects to establish position or to measure movement of a point in space

• Frame of reference

• Motion

• Speed

A measurement of the rate of change of position with respect to time

• Frame of reference

• Speed

• Velocity

Tags

NGSS.MS-PS3-1

Measurement of speed and direction of an object

• Acceleration

• Speed

• Velocity

Tags

NGSS.MS-PS3-1

Change of an object's speed or direction

• Acceleration

• Motion

• Velocity

Tags

NGSS.MS-PS2-2

What does speed measure?

• How fast an object is going

• How far an object has traveled

• The rate at which an object slows down

• The rate at which an object speeds up

Tags

NGSS.MS-PS3-1

Which of the following can be used to measure an object's speed?

• Joules

• Newtons

• Miles per hour

• Kilometers per second per second

Tags

NGSS.MS-PS3-1

What does acceleration measure?

• How fast an object is going

• The fastest speed that an object can reach

• The force with which an object travels

• The rate at which speed or direction changes

What is the difference between positive and negative acceleration?

• Positive acceleration applies to fast objects; negative acceleration applies to slow objects.

• Positive acceleration occurs when objects speed up; negative acceleration occurs when objects slow down.

• Positive acceleration applies to objects traveling on earth; negative acceleration applies to objects traveling in space.

• Positive acceleration is expressed in meters per second; negative acceleration is expressed in kilometers per hour.

Which of these is an example of acceleration?

• A car coasts along at 40 km/hr

• A car is parked on the side of the road

• A speeding car brakes to a stop

• A car speeds along at 100 km/hr

Tags

NGSS.MS-PS3-5