Changes in Force & Motion

All changes in motion require the input of a 

• variable
• change in direction
• force

What causes a change from potential to kinetic energy?

• mass is increased
• a force is applied
•  a decrease in temperature

Force is measured in units called

• newtons
• degrees
• joules

an abject in motion stay in motion until an unbalanced force acts upon it

• true
• false

which scientist discovered laws explaining gravity?

• leanardo da vinci
• galileo galilei
• sir isaac newton

How is force defined?

• push or pull
• electrons moving 
• a form of energy measured in joules

an object at rest stays at rest until an unblanaced force acts upon it

• true
• false

an object that is at rest will begin to move if...

• the mass is larger
• unbalanced forces act on the object
• gravity on the object is reduced

what action represents a pull?

• pushing a shopping cart

• kicking a ball

• closing a door

in a tug of war, one team pull to right with the force of 50 newtons and the opposite team pulls to the left with 80 newtons, which direction does the rope move?

• right
• left