Force and motion

What is speed?

• The positive or negative direction of motion

• The reference point of an object

• The rate at which an object moves

• A reference frame

Tags

NGSS.MS-PS3-1

What is velocity?

• An object speeding up or slowing down

• The momentum of a moving object

• Acceleration divided by time

• Speed in a certain direction

Tags

NGSS.MS-PS3-1

Acceleration is (a)  

• A change in velocity
• The rate of a moving object
• The direction of an object
• An object at rest

Tags

NGSS.MS-PS2-2

An example of velocity is (a)  

• 10 m/s down
• 10 m/s
• 10 m/s/s down
• 10 m

Tags

NGSS.MS-PS3-1

What is a reference point?

• a finish line

• a stationary point to compare distance and time to

• a measure of distance

• the fastest velocity of an object

What is the formula for speed and velocity?
(a)  

• distance/time
• distance x time
• time/distance
• time - distance

Tags

NGSS.MS-PS3-1

Deceleration is (a)  

• negative acceleration
• positive velocity
• positive acceleration
• negative velocity

Tags

NGSS.MS-PS2-2

Which of the following would NOT cause acceleration?

• increasing velocity

• changing direction

• going at a steady rate in one direction

• decreasing velocity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

What is your acceleration if you increase your velocity from 30 m/s to 40 m/s South in 10 seconds?
(a)  

• 1 m/s/s South
• 100 m/s/s South
• 1/2 m/s/s South
• -10 m/s/s South

Tags

NGSS.MS-PS2-2

Which of the following is an example of negative acceleration?

• a speed skater leaving the starting line

• a skier going down a slope

• a truck going 60 mph

• a runner slowing to a walk after crossing the finish line

Tags

NGSS.MS-PS2-2