Work

Q.

Define work and give its formula. Give some examples of situations where work is said to be done.

Q.

When force moves an object, _____ is done.

1. friction

2. speed

3. work

4. energy

Q.

When a force causes displacement of an object, ___ is done.

1. gravity

2. speed

3. energy

4. work

Q. If Mark is able to move the table through a distance, then ____ is said to be done.

1. force
2. work
3. speed
4. energy

Q.

The capacity to do work is called ____.

1. motion

2. speed

3. distance

4. energy

Q.

Work done is greater in moving a heavier object than a lighter object through the same distance on a same rough surface.

1. True

2. False

Q. Work is being done by a boy who is trying to lift a box but can not lift it.

1. True
2. False

Q.

In which of the following situations is more work done?

1. Carrying a bag for 3 km

2. Carrying a bag for 10 km

3. Carrying a bag for 9 km

4. Carrying a bag for 6 km

Q.

Choose the odd one out giving reason:

1. Motor

2. Lamp

3. Generator

4. Work

Q. In the given picture, if the wooden block moves from A to B, work is said to be done.

1. True
2. False

Q.

Among these situations, where is more work done?

1. Carrying a bag for 3 km
2. Carrying a bag for 10 km
3. Carrying a bag for 4 km
4. Carrying a bag for 1 km

Q.

For amount of work done to be 0 on application of some force, the net distance should be _____.

1. zero
2. non-zero
3. positive
4. negative

Q.

"Manju works for a long time!" Is the term work used here in the same way as it is termed in science?

1. Yes

2. No

Q. Energy is essential for doing work.

1. True
2. False

Q.

Name the physical quantities on which the amount of work done depends.

Q. ______ is the ability to do work.

1. Energy
2. Force
3. Speed
4. Rest

Q. When a force is applied to an object causing it to move, then ______ is said to be done.

1. energy
2. work
3. rest
4. speed

Q.

Workdone is measured in?

Q.

When does a force do a Work?

Q.

The work done on an object depend on _____.

1. strength of force only

2. net distance
3. both strength of force and net distance
4. neither strength of force nor net distance

Q. Work is done when an object is moved by a :

1. Force
2. Energy
3. Distance
4. Speed

Q. This girl is spending the energy while moving the shopping cart.

1. True
2. False

Q. In which of the following movements work is done?

1. Reading book
2. Swimming
3. Running
4. Sleeping

Q. ______ is the ability to do work.

1. Energy
2. Force
3. Speed
4. Rest

Q.

Energy is required to do work.

1. True

2. False

Q.

For doing work we need energy.

1. True
2. False

Q.

Manish picks up a box from the ground and places it back. The work done here is ___.

1. $0J$

2. $30J$

3. $40J$

4. $50J$