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WorksheetsWork - Concepts and Problems
Total questions: 12
Worksheet time: 10mins
Work can be defined as a _____ acting over some amount of _____ to cause a change in _____.
force, distance, energy
force, time, energy
force, time, distance
force, distance, time
What is the common formula for work?
W=F v cos (angle between the direction of motion and the force)
W=F d cos (angle between the direction of motion and the force)
W=F m cos (angle between the direction of motion and the force)
W=F t cos (angle between the direction of motion and the force)
The unit for work is the _____.
Newton
kilogram
Joule
meter
When is work positive?
Work is positive if a force is opposite the direction of motion.
Work is positive if a force is in the same direction as the direction of motion.
Work is positve if a force is perpendicular to the direction of motion.
When is work negative?
Work is negative when a force is in the same direction as the direction of motion.
Work is negative when a force is opposite the direction of motion.
Work is negative when a force is perpendicular to the direction of motion.
Work is a _____.
vector; the direction of the work vector
vector; whether the work adds or removes energy from the object
scalar; the direction of the work vector
scalar; whether the work adds or removes energy from the object
What is the total work done on the object? It moves 1 meter to the right.
0 Joules
0.5 Joules
500 Joules
50 Joules
George carries a box 6 meters to the right. Find the work done by the man on the 15 kg box.
900 Joules
0 Joules
90 Joules
Which of the following is an example of work?
Holding a bowling ball above your head
A waiter holds a tray of food above his head while traveling 6 meters across a crowded room
A teacher applies a force to a wall to hold up a poster
A puppy pushes a tennis ball 10 meters with his nose
