A force has both strength and ________.
direction
When Izzy and Zoe pull on the rope with the same amount of force, the forces are ________.
balanced
Why did Izzy fall when playing tug of war?
unbalanced forces
Why doesn't the ping-pong ball just shoot up to the ceiling?
force of gravity
To move back to where he started, Dr. Jeff changes which of these?
direction of the force
Which of these involves balanced and unbalanced forces?
all of these
Why is the egg NOT moving before Zoe hits the pan?
forces are balanced
What force causes the egg to fall into the cup?
gravity
What did Zoe change to steer her hovercraft?
direction of force
Why didn't Zoe get the ball in the hole on her first try?
wrong direction but right amount of strength
