8.6 Physics Review

If a ball of cheese is fired into frictionless space, the amount of force needed to keep it going equals

• twice the force with which it was fired
• the same amount of force with which it was fired
• 1/2 the force with which it was fired
• zero, since no force is requires to keep it moving. 

What is the speed of an object that travels 20 meters in 4 seconds?

• 80 m/s
• 0.2 m/s
• 5 m/s
• 24 m/s

If a 10 kilogram object accelerates suddenly at 15 m/s², how much force was applied to the object?

• 150 Newtons
• 15 Newtons
• 150 kilograms
• 100 kilograms

What law of motion does this picture represent 

• Newtons law of gravity 
• Newtons 1st law 
• Newtons 4th law
• Newtons 3rd law 

What Newtons law does this picture represent

• Newtons 2nd law 
• Law of gravity 
• Newtons 1st law
• Newtons 5th law

What is speed?

• how far you go
• how much distance is covered over a period of time
• how fast you accelerate
• the change in the location of a object

What is velocity?

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

An object that changes speed or direction or both (velocity) is said to be -

• accelerating
• speeding

What does this graph represent?

• Constant Speed
• Acceleration
• Deacceleration
• Not moving

What is the average speed of this object's trip?
Think about: the distance the object traveled away from its point of origin.

• 0.42 m/s
• 60 m/s
• 12 m/s
• 5 m/s