# a quarterback throwing the football
unbalanced
# a pickup truck cruising at a constant velocity
balanced
# two teams in a tug of war at a standstill
balanced
# a math book sitting on top of a table
balanced
# Reese and Li moving Catalina's amplifier a short distance
balanced
# Li throwing a guitar pick across the room
unbalanced
# Cory's keyboard held in place on its keyboard stand
balanced
# Catalina jumping through the air during an IMPACT concert
unbalanced
are these correct?
I am wondering what the question is. If you are trying to describe balanced and unbalanced forces, yes, correct.
oh yes I'm sorry i thought it was self explanatory. thanks(:
I had to take my crystal ball in for repairs, sorry. Glad to be of help.
Yes, most of your answers are correct! I'll explain how I reached each conclusion:
1. A quarterback throwing the football: This is an example of an unbalanced force because the quarterback applies a force on the football, giving it an acceleration in a particular direction.
2. A pickup truck cruising at a constant velocity: This is an example of a balanced force. When an object is moving at a constant velocity, there is no net force acting on it. In this case, the driving force exerted by the truck's engine is balanced by the opposing forces like friction and air resistance.
3. Two teams in a tug of war at a standstill: This is an example of a balanced force. If the teams are at a standstill, it means they are applying equal forces in opposite directions. The net force is zero, so the forces are balanced.
4. A math book sitting on top of a table: This is an example of a balanced force. The book is at rest on the table, meaning that the force of gravity pulling it downward is balanced by the normal force exerted by the table upward.
5. Reese and Li moving Catalina's amplifier a short distance: This is an example of a balanced force. If Reese and Li are moving the amplifier together without any acceleration (constant velocity), it means that the force they are applying is balanced by the opposing forces like friction.
6. Li throwing a guitar pick across the room: This is an example of an unbalanced force. When Li throws the guitar pick, he applies a force in one direction, giving the pick an acceleration. There might be some opposing forces like air resistance, but the initial force is unbalanced.
7. Cory's keyboard held in place on its keyboard stand: This is an example of a balanced force. The keyboard is at rest on the stand, meaning that the force of gravity pulling it downward is balanced by the normal force exerted by the stand upward.
8. Catalina jumping through the air during an IMPACT concert: This is an example of an unbalanced force. When Catalina jumps, she exerts a force on the ground, allowing her to leave the ground and move upward. The initial force is unbalanced, but once she's in the air, there might be opposing forces like air resistance.