Work Quiz review

Which situation is work not done?

• lifting a 20 pound box off the floor
• holding a 20 pound box above the floor
• sliding a 20 pound box across the floor
• sliding a 20 pound box up an inclined plane

What is the formula for work?

• Force = work x distance
• Distance = force x work
• Work = force x distance
• Work = force x mass

Fred kicks a ball with a force of 20N to George, who is 5M away. How much work was done to the ball?

• 25J

• 100J

• 4J

• 75J

if you push a cart with a force of 60 N for 2 m... how much work have you done

• 120 J

• 30 J

• 120 N

• 30 N

The unit used to measure work is the 

• Watt
• Newton
• Joule
• meter

How much work is produced when 350 N is used to move a car 5 m (W=Fd)?

• 70 J
• 1750 J
• 355 J
• 175 J

What is effort (input) force?

• the force one exerts on a machine

• the force which an effort force must overcome in order to do work on an object via a simple machine.

• the force the machine exerts on a object

• the output work times the input distance

What is resistance (output) force?

• the force required by a machine in order to accomplish work (the force you put on the machine)

• The force that is exerted by a machine

• the force the machine exerts on a object

• the output work times the input distance

What is effort (input) distance?

• the force required by a machine in order to accomplish work (the force you put on the machine)

• the force which an effort force must overcome in order to do work on an object via a simple machine.

• the distance an input force acts through

• the output work times the input distance

What is resistance (output) distance?

• the force required by a machine in order to accomplish work (the force you put on the machine)

• the force which an effort force must overcome in order to do work on an object via a simple machine.

• the distance an input force moves a machine

• the distance through which the output force is exerted