Physics Unit Review

The combination of all forces acting on an object. 

• Net Force

• Balanced Force

• Balanced Force

When opposite forces cancel each other out.  There is no change in motion.  The net force equals zero. 

• Balanced Forces

• Net Force

• Unbalanced Forces

Changing position relative to another object

• Distance

• Motion

• Reference Point

Friction is a force that acts in the ______________ direction of the way the object is trying to move. 

• same

• perpendicular

• opposite

What is the net force shown in the picture?

• 10 Newtons

• 5 Newtons

• 3 Newtons

• 2 Newtons

The LOWER the mass of an object, the more force it takes to start it, stop it, or change its direction. 

• True

• False

Newton's 1st Law of Motion states "an object at rest stays at rest and an object in motion stays in motion until an unbalanced force acts on it." What is this called? 

• speed

• gravity

• inertia

• velocity

What is the correct formula to use for the following problem:

"How much TIME will it take for a bug to travel 5 meters across the floor if it is traveling 1 meter/second?"

• D=SxT

• S=D/T

• T=D/S

What is the correct formula to use for the following problem:

"You got to the mailbox 45 seconds after you got out of the car, which is 90 meters away.  How FAST did you travel to the mailbox?"

• S=D/T

• T=D/S

• D=SxT

Which of the following statements is associated with Newton's 3rd Law of Motion?

• For every action, there is an equal and opposite reaction

• Two objects must be involved to create a force

• Whenever an object pushes another object, it gets pushed back in the opposite direction equally as hard.

• All of the above