Review:Physics Chapter 1
Answer the following using your textbook and calculator when necessary.
Try to not use your NB2 “Best Friend” as you will not have that during your test!
- What is motion?
- How can you describe the direction of an object’s motion?
- What is speed?
- Give an example of Metric and English units used to measure speed?
- What is velocity?
- How is velocity different than speed?
- Find the resultant velocity of Mrs. Farrellwho is awkwardly crawling at 1 m/s east while on a bus traveling at 20 m/s in the same direction.
- Mr. Kaeser begins skipping at 2 m/s west. His pace increases over 4 seconds and he is now galloping at a rate of 10 m/s west. What is his acceleration?
- What can be said about the velocity of an object that is in circular motion?
- What is the definition of a force? What are the units for force?
- What is net force?
- How do you calculate net force when the forces are in the same direction?
- How do you calculate net force when the forces are in the opposite direction?
- What is the net force when the forces are balanced?
- Determine the net force of the following. Which way will it move?
30 N North
45 N West 45 N East
20N South
- What occurs when forces are balanced and when they are unbalanced? Be able to describe scenarios in
which forces are balanced and unbalanced.
- What is the definition of friction?
- How does force affect friction (Does a heavier book have more friction)?
- Does a rough or smooth surface have more friction and why?
- What effect does surface area have on friction?
- What is the difference between kinetic and static friction?
- What are the two types of kinetic friction and which one is usually greater?
- Name three examples of how friction can be harmful.
- Name three examples of how friction can be helpful.
- How can you decrease friction?
- How can you increase friction?
- What is Gravity?
- Who is the scientist that determined gravity and how was it determined?
- What two factors determine Gravitational force?
- Explain how each factor would change gravitational force if they were altered.
- Define what mass and weight.
- What is each a measurement of?
- Explain if the massorweightof an object would change if the object were moved to another planet
and explain why this is.
- Mrs. Dome’sinitial speed at the beginning of a raceis 10.8 m/s. When she reaches the end, her speed is 4.5 m/s. It took her 20 s to run the race. Calculate the sprinter’s acceleration. Show your work using the 5-step method. Circleyour final answer.
- Knoedler’s scooter accelerates at 20 m/s2. It has a mass of 5 kg. What is the force on the cart? Show your work using the 5-step method. Circle your final answer.