Exam 4 Physics Numbers 1-5 2016-2017

1. 1.Which of the following sentences uses work in the scientific sense?

A. Stan goes to work on the bus.

B. Anne did work on the project for 5 hours.

C. Joseph found that holding the banner in place was hard work.

D. An engine does work on a car when the car is moving.

A. Holding a heavy box requires a lot of work.

B. A scientist works on an experiment in the laboratory.

C. Tony and Darren pushed the car to the side of the road.

D. John learned that shoveling snow is hard work.

A. Lifting a heavy bucket involves doing work on the bucket.

B. The force of friction usually does negative work.

C. Sam and Rachel worked hard pushing the car.

D. Work is a physical quantity.

A. whenever a force acts on the object.

B. whenever a force is perpendicular to the displacement of the object.

C. whenever a force causes a displacement of the object.

D. whenever a net force acts on the object.

A. A weightlifter lifts a barbell.

B. A weightlifter holds a barbell overhead.

C. A weightlifter slowly lowers a barbell.

D. A weightlifter drops a barbell and the barbell falls to the ground.