11/29 Force & Motion Review

​11/29 Force & Motion Review

Replace this with a sub-header that can be in multiple lines. ​

Speed, Velocity and Acceleration

by Kimberly Molina

​Speed

​Speed is the measure of how fast the distance changes in a given a amount of time.

​Velocity

​Velocity is the speed and direction that an object is moving.

​

​If you know the speed then you only need to figure out what direction the object is moving.

​Acceleration

​Acceleration is the measure of how velocity (speed and direction) changes.

​

​Objects can accelerate when they speed up, slow down, or change direction.

Multiple Choice

What is this?

"This car is speeding up"

• Speed

• Velocity

• Acceleration

Multiple Choice

What is this?

"This airplane is traveling at 500 mph, West"

• Speed

• Velocity

• Acceleration

Multiple Choice

What is this?

"Rocky is running 8mph North"

• Speed

• Velocity

• Acceleration

Multiple Choice

What is this?

"The car has to go from 40mph to 60mph when entering the freeway"

• Speed

• Velocity

• Acceleration

Multiple Choice

What is this?

"The car is traveling at 150 kilometers per hour"

• Speed

• Velocity

• Acceleration

Multiple Choice

What is this?

• Speed

• Velocity

• Acceleration

Multiple Choice

What is this?

• Speed

• Velocity

• Acceleration

Multiple Choice

If the speed includes this picture what is it?

• Speed

• Velocity

• Acceleration

Multiple Choice

Usian Bolt can run at a top speed of 28 mph.

• Speed

• Velocity

• Acceleration

Multiple Choice

Post Malone's Velociraptor goes from 0 to 60 in 4.1 seconds.

• Speed

• Velocity

• Acceleration

Multiple Choice

An object that is traveling east at a constant rate has —

• speed, but neither velocity nor acceleration

• speed and velocity, but no acceleration

• velocity, but neither acceleration nor speed

• acceleration and speed, but no velocity

Multiple Choice

A high school baseball team in Dallas travels south to Austin to participate in a tournament. The trip from Dallas to Austin is about 322 kilometers. The trip requires about 3.5 hours to complete on a school bus. Which of the following best represents the VELOCITY of the bus?

• 92 km/h South

• 112.7 km/h South

​Speed Triangle

​The formula for speed is:

​

​Speed = Distance/Time

​

​The formula can be

rearranged to find distance

or time.

Multiple Choice

A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?

• 10 m/s

• 1000 m/s

• 100 seconds

Multiple Choice

Alan travels 100 km in 5hrs. Find his average speed in km/h

• 5km/hr

• 10km/hr

• 50km/hr

• 20km/hr

Multiple Choice

Find speed when distance is 142 km and time is 2 hours.

• 71km/hr

• 52km/hr

• 17km/hr

• 90km/hr

Multiple Choice

What is the speed of an object that travels 60 meters in 4 seconds?

• 240 m/s

• 15 m/s

• 0.067 m/s

Multiple Choice

Kermit rides his bike at a constant speed of 12 miles per hour. How far can he travel in 2 hours?

• 1/2 mile

• 6 miles

• 24 miles

Multiple Choice

If a boat travels at 22 km/hr for 10 hrs, what distance will it travel?

• 22 km

• 2.2 km

• 220 km

Multiple Choice

If the man and the ball travels 90 m in 9 seconds, what is their average speed?

• 10 m/s

• 180 m/s

• 99 m/s

Multiple Choice

If a lizard can run 8 m across the water in 4 seconds, how fast is he traveling?

• 32 m/s

• 2 m/s

• 34 meters

Multiple Choice

A block is pulled 0.90 m to the right in 2.5 s. What is the block’s average speed?

• 0.36

• 2.25

Multiple Choice

A worm traveled 50 centimeters in 5 minutes.  What is the average speed of the snail?

• 10 cm/m

• 25 cm/m

• 250 cm/m

• 1 cm/m

•Graphs can be used to represent motion

•Graphs have an X and a Y axis

​

​

•Distance: Tells us where the object is.  How NEAR or FAR from 0.

•Time: Tells how long the object has been traveling.

Graphing Motion:

Multiple Choice

Describe the motion in the graph:

• Constant Speed (positive slope)

• Stopped (at rest)

• Acceleration (increasing speed)

• Return Home (negative slope)

Multiple Choice

Describe the motion in the graph:

• Constant Speed (positive slope)

• Stopped (at rest)

• Acceleration (increasing speed)

• Return Home (negative slope)

Multiple Choice

Describe the motion in the graph:

• Constant Speed (positive slope)

• Stopped (at rest)

• Acceleration (increasing speed)

• Return Home (negative slope)

Multiple Choice

Describe the motion in the graph:

• Constant Speed (positive slope)

• Stopped (at rest)

• Acceleration (increasing speed)

• Return Home (negative slope)

Multiple Choice

Describe the motion in the graph:

• Constant Speed (positive slope)

• Stopped (at rest)

• Acceleration (increasing speed)

• Return Home (negative slope)

Multiple Choice

Describe the motion in the graph:

• Constant Speed (positive slope)

• Stopped (at rest)

• Acceleration (increasing speed)

• Return Home (negative slope)

Multiple Choice

Describe the motion in the graph:

• Constant Speed (positive slope)

• Stopped (at rest)

• Acceleration (increasing speed)

• Return Home (negative slope)

Multiple Choice

Describe the motion in the graph:

• Constant Speed (positive slope)

• Stopped (at rest)

• Acceleration (increasing speed)

• Return Home (negative slope)

Multiple Choice

Describe the motion in the graph:

• Constant Speed (positive slope)

• Stopped (at rest)

• Acceleration (increasing speed)

• Return Home (negative slope)

Multiple Choice

Describe the motion in the graph:

• Constant Speed (positive slope)

• Stopped (at rest)

• Acceleration (increasing speed)

• Return Home (negative slope)

Multiple Choice

Using the table, which graph shows the motion of the lizard as it looks for food?

What is a force, and how does it act on an object?

• A force is a push or a pull.  

• All forces have both size and direction.

  
  

Balanced vs Unbalanced Forces

• Forces can be balanced or unbalanced. When the forces on an object produce a net force of 0 N, the forces are balanced. Balanced forces do not cause a change in the motion of a moving or nonmoving object. 

  
  

• Balanced forces do not cause a change in the motion of a moving or nonmoving object. 

  
  

Balanced vs Unbalanced Forces

• When the net force on an object is not 0 newtons, the forces are unbalanced. Unbalanced forces produce a change in an object’s motion. 

  
  

  
  

Multiple Choice

How will this object move? 

• It won't move. 

• It will move to the right. 

• It will move to the left. 

• It will move in both directions. 

Multiple Choice

What is the net force?

• 40 N left

• 0 N Balalnced

• 400 N right

• 40 N right

Multiple Choice

What is the net force?

• 10 N

• 0 N

• 25 N

• 1 N

Multiple Choice

These forces are...

• Balanced

• Unbalanced

Multiple Choice

The net force is...

• 50 N

• 0 N

• 100 N

• 2500 N

Multiple Choice

Balanced or unbalanced?

• balanced
• unbalanced

Multiple Choice

If an object is not moving the forces acting upon it are _____________

• unbalanced

• weak

• balanced

• Hulk Smash!

Multiple Choice

What is true about this image?

• It shows unbalance forces.

• It shows balanced forces, no motion

• The people on the right are winning.

• The people on the left are winning.

Multiple Choice

The net force is...

• 50 N

• 0 N

• 100 N

• 2500 N

Multiple Choice

What is the net force?

• 65 N left

• 65 N right

• 35 N left

• 35 N right

Multiple Choice

What direction will the object move?

• left

• right

• up

• no movement

Multiple Choice

What direction will the object move?

• left

• right

• up

• no movement

Multiple Choice

What direction will the object move?

• left

• right

• down

• no movement

Multiple Choice

What direction will the object move?

• left

• right

• down

• no movement

Multiple Choice

What direction will the object move?

• left

• right

• north

• south

Multiple Select

Which of the objects experienced unbalanced forces?

Select TWO correct answers.

• Object 1 - speed increases

• Object 2 - Speed is constant

• Object 3 - speed decreases

• Object 4 - object is motionless

Multiple Choice

Which point in the roller coaster do you experience the greatest kinetic energy?

• On top of the track

• climbing up the track

• the bottom of the track

• stopping at the track

Multiple Choice

Which point in the pendulum has the greatest potential energy?

• A

• B

• C

• A and C

Multiple Choice

When a pendulum swings, at which point is potential energy at its greatest?

• 1

• 2

• 3

• 4

Multiple Choice

Which point has the most potential energy?

• G

• f

• b

• a

Multiple Choice

Which object on the shelf has the greatest potential energy?

• the red vase on the second shelf

• the blue vase on the top shelf

• the white box on the bottom shelf

Multiple Choice

At which point is Marshall's potential energy the greatest?

• Point A

• Point B

• Point C

• Point D

Energy Transformations

Mechanical Energy -

Energy that is MOVING

Electrical Energy -

Energy from the flow of electrons

(Ex. anything you plug into an outlet)

Chemical Energy -

Energy stored in chemical bonds

(Ex. Food, Batteries, and Plants)

Thermal Energy -

Energy given off as heat (friction)

Nuclear Energy -

Energy stored in atomic particles

Sound Energy -

Energy caused by vibrations and that moves through air or water

Electromagnetic Energy -

Energy that travels through space in invisible waves