Forces and Motion

What is MOVEMENT?

• Inertia
• Force
• Work
• Motion

What is a PUSH or PULL of an object?

• Motion
• Force
• Friction
• Gravity

1.  It is easier to ride a bicycle down a hill than to ride up a hill because _______ helps the bicycle move down the hill. 

• gravity
• friction
• rotation

How fast an object is moving is its ________.

• speed
• position
• direction
• motion

The location of an object is its ________.

• direction
• position
• speed
• motion

Which words describe the position of an object?

• north, south, east, west
• miles per hour
• over, under, to the left of, to the right of, behind, beside, on top of
• feet per second

When an object's position is changing, that means it is in ________.

• motion
• speed
• direction
• position

To measure and object's speed, you must know two things, they are:

• The size and direction of the object
• The starting position and time it took
• how far the object traveled and how long it took to go that distance
• how to use a timer, how heavy the object is

Why does a rolling ball stop?

• Gravity
• Friction
• Waterfalls
• Sand

What pulls a ball back to earth?

• Gas
• Gravity
• Friction
• Molecules