Unit 2 Forces and Motio

Define force

• a push or a pull
• he total amount of energy within an object
• when an object converts energy into a different form
• he amount of work done

What is acceleration?

• the direction that the object is traveling
• taking place when the object remains motionless
• when the speed and/or direction is changing
  
• the same as an object's speed

What is Inertia?

• the amount of matter an object contains
• the total amount of energy within an object
• the tendency of an object to resist motion
• momentum

A school bus moves north at 20m/s. What is your velocity with a reference point on the street?

• 1 m/s South
• 19 m/s South
• 21 m/s South
• 20 m/s South
  

What is the difference between speed and velocity?

• velocity tells time
• velocity identifies the type of motion
• velocity includes the strength of the force involved
• velocity includes the direction of the motion
  

What is the speed of a cyclist who traveled 60 kilometers in 5 hours?

• 12 km/hr
  
• 40 km/hr
• 30 km/hr
• 75 km/hr

Which is going to collide with the truck with the LEAST force?

• All will collide with the same force
• car
• bug
• mouse

A runner runs from the starting line & accelerates to 15m/s in 5s. What is their acceleration?

• 45 m/s/s
• 3 m/s/s
• 17 m/s/s
• 60 m/s/s

Which of the following will increase the acceleration of an object that is pushed by a force?

• Increasing the mass of the object
• Increasing the gravity on the object
• Increasing the friction on the object
• Increasing the force pushing the object
  

On a distance vs time graph, a flat horizontal lines means the object

• is traveling at a constant speed.
• has stopped.
  
• is traveling at a constant velocity.
• Unable to determine