Forces 2

What is the formula to calculate speed?

• Speed = time/distance
• Speed = distance/time
• Speed = distance x time
• Speed = time x distance

Tags

NGSS.MS-PS3-1

Can be measured in meters per second (m/s)

• Distance
• Time
• Speed
• Acceleration

Tags

NGSS.MS-PS3-1

What is velocity?

• the quickness of an object
• the location of an object
• acceleration
• speed in a specific direction

The rate that a car's velocity changes is its

• speed

• force

• gravity

• acceleration

A rightward-moving motorcycle increases its speed from 5.0 m/s to 25.0 m/s. Is the motorcycle accelerating?
 

• Yes
• No

Inertia is a force

• True

• False

Suppose that an astronaut throws a baseball in outer space at a location far from significant influences of gravity and air resistance. One would expect that the baseball would ____.

• eventually stop since all objects ultimately "lose their steam"

• eventually stop as its inertia slowly becomes used up

• continue in motion with the same speed and direction

• either a, b, or c -- depending on whether the astronaut continues to push it

Tags

NGSS.MS-PS2-2

Inertia depends on ______

• Velocity

• Speed

• Distance

• Mass

Tags

NGSS.MS-PS2-2

List the objects in order from least to greatest inertia.

• CDBA

• ABCD

• BCDA

• CBAD

Tags

NGSS.MS-PS2-2

Motion is always opposed by this force

• Gravity

• Inertia

• Friction

• Net Force