Speed, Velocity, and Acceleration: Lesson 5

Average speed is ___________.

• the distance an object travels per unit of time

• the force needed to move an object from rest

• the direction an object is traveling

• the time an object takes to reach its destination

Instantaneous speed is _________.

• the rate of change in velocity

• the instant an object changes direction

• the speed of an object at a given instant

• the exact time it takes an object to change its speed

What is velocity?

• the motion of a force acting upon an object

• the energy of a moving object

• when an object is touched by another object to affect motion

• the speed and direction of a moving object

Tags

NGSS.MS-PS3-1

What is acceleration?

• a measure of the pull of gravity on an object

• the distance an object moves before coming to rest

• the amount of time an object moves at a constant speed

• the rate of change in velocity

Average ​ (a)   is calculated by ​ (b)   the ​ (c)   an object travels by the ​ (d)   it takes the object to move that distance.

• distance
• time
• speed
• dividing

​ (a)   is a measure of ​ (b)   and direction, so if the ​ (c)   an object is moving ​ (d)   , the object’s velocity also changes.

• direction
• changes
• Velocity
• speed

Tags

NGSS.MS-PS3-1

An object ​ (a)   if its instantaneous ​ (b)   , direction of ​ (c)   , or both change.

• speed
• motion
• accelerates

Tags

NGSS.MS-PS2-2

Arrange to create the formula for average speed.

a

b

Time

Distance

Arrange to create the formula for average acceleration.

a

b

c

Starting Velocity

Time

Final Velocity

All of the cars on the road are moving at a constant speed. Select the cars that have velocities that are changing.

• A

• B

• C