Force and Motion

Besides strength or magnitude, every force has...

• detention

• a light and dark side

• direction

• magnetic force

A ball is rolled across four different surfaces with the same force. Which surface will slow the movement of the ball the most?

• cement sidewalk

• grassy field

• paved road

• tile floor

How do electric and magnetic forces act on different objects?

• They only push or pull objects when they touch each other

• They either push or pull objects

• They only pull objects

• They only push objects

What happens when an object accelerates?

• its speed or direction changes

• only its direction changes

• Only its speed changes

• Its speed and direction do not change

When you ride a roller coaster, what makes your body rise out of its seat at the top of a hill?

• gravity

• inertia

• friction

• electricity

How can you complete this sentence so it is always true?

The greater the net force acting on an object,

• the lesser the mass of the object

• the greater the mass of the object

• the lesser the acceleration of the object

• the greater the acceleration of the object

What always happens when the forces acting on an object are equal in strength and opposite in direction?

• The object becomes heavier

• The object does not move

• The motion of the object does not change

• The object moves

When the sun is low in the sky early in the morning, trees form...

• all sizes of shadows

• short shadows

• no shadows

• long shadows

What can you do to make a wooden car go as fast as possible?

• Say..."GO" really loud with excitement

• Make the car heavy so it will move downhill faster and give it a smooth compact shape to reduce drag

• Interview Lightning McQueen and find out his secrets. And since you are there also talk to mater

• Make the car light so it wont go downhill faster and give it a box shape to increase drag

Describe a contact and non-contact force that affects the motion of a baseball after a pitcher has thrown the ball

• Air resistance, a contact force slows the ball down as it moves through the air, and gravity, a non-contact force, gradually pulls the baseball down

• Light saber strike, a contact force slices the ball in half as it contacts the saber beam. Force lightning, a non-contact force disintegrates the ball as it approaches

• Boo hungry, boo catches the ball mid air and then chews on it, then beebo gives boo a high five

• May the force be with you