Forces and Motion

ClassFeud Forces and Motion

Forces Acceleration Motion Velocity Velocity Speed ClassFeud Team１ Team２

CLASS FEUD A force is a ________ or a ________.

CLASS FEUD A force is a ________ or a ________. Answer: A push or a pull.

CLASS FEUD Balanced forces produce a net force of _________.

CLASS FEUD Balanced forces produce a net force of _________. Answer: zero

CLASS FEUD Rolling friction is usually A. less thanB. more thanC. equal tosliding friction.

CLASS FEUD Rolling friction is usually A. less thanB. more thanC. equal tosliding friction. Answer: Less than

CLASS FEUD Unbalanced forces are necessary to cause a change in __________.

CLASS FEUD Unbalanced forces are necessary to cause a change in __________. Answer: motion

CLASS FEUD You can run 100 meters in 10 seconds. What is your speed?

CLASS FEUD You can run 100 meters in 10 seconds. What is your speed? Answer: 10 m/s

CLASS FEUD An example of acceleration is: A. a hovering helicopterB. a car turning a cornerC. bicycling at 40 m/s

CLASS FEUD An example of acceleration is: A. a hovering helicopterB. a car turning a cornerC. bicycling at 40 m/s Answer:A car turning a corner

CLASS FEUD _________ friction includes both liquids and gases.

CLASS FEUD _________ friction includes both liquids and gases. Answer: Fluid

CLASS FEUD A student riding her bicycle on a straight, flat road covers one block every 7 seconds. If each block is 100 m long, she is traveling at _________ speed or velocity.

CLASS FEUD A student riding her bicycle on a straight, flat road covers one block every 7 seconds. If each block is 100 m long, she is traveling at _________ speed or velocity. Answer: constant

CLASS FEUD A force is expressed in ___________.

CLASS FEUD A force is expressed in ___________. Answer: Newtons

CLASS FEUD If a bus traveling 15 m/s south speeds up to 20 m/s, this is a change in __________.

CLASS FEUD If a bus traveling 15 m/s south speeds up to 20 m/s, this is a change in __________. Answer: speed or velocity or acceleration

CLASS FEUD Acceleration is the rate of change in ____________.

CLASS FEUD Acceleration is the rate of change in ____________. Answer: velocity (also accept speed or direction)

CLASS FEUD The distance divided by the time it took to travel that distance is an object’s _________.

CLASS FEUD The distance divided by the time it took to travel that distance is an object’s _________. Answer: speed

CLASS FEUD When you combine all forces acting on an object you get the ____________.

CLASS FEUD When you combine all forces acting on an object you get the ____________. Answer: net force

CLASS FEUD _________ is a force that opposes motion.

CLASS FEUD _________ is a force that opposes motion. Answer: Friction

CLASS FEUD What is the net force when you combine a force of 7 N north with a force of 2 N south?

CLASS FEUD What is the net force when you combine a force of 7 N north with a force of 2 N south? Answer: 5N north

CLASS FEUD Moving blades of a windmill or a pinwheel are example of ___________ acceleration.

CLASS FEUD Moving blades of a windmill or a pinwheel are example of ___________ acceleration. Answer: centripetal

CLASS FEUD Decreasing velocity can be referred to as:A. accelerationB. decelerationC. negative accelerationD. All of the above.

CLASS FEUD Decreasing velocity can be referred to as:A. accelerationB. decelerationC. negative accelerationD. All of the above. Answer: D. all of the above

CLASS FEUD Are the forces on a kicked soccer ball balanced or unbalanced? How do you know?

CLASS FEUD Are the forces on a kicked soccer ball balanced or unbalanced? How do you know? Answer: Unbalanced because the ball changes speed and/or direction.

Forces and Motion