physics

posted by .

true or false
1. The work required to stretch a spring changes linearly with the amount of strech?

2. The kinetic energy of an object increases linearly as the velocity of the object increases?

3. Kinetic energy is proportional to speed?

4. Kinetic energy is proportional to mass?

5. Kinetic energy is a scaler quantity?

6. Power is a vector quantity?

7. Work done by the force of friction can be positive or negative?

8. Work done by a force on an object can be positive or negative quantity?

• physics -

65

Similar Questions

1. physics

I had wrote that was because I was told that in the beginning of the spring being wound the PE=KE. Can I check a concept question, The amount of work required to stop a moving object would be equal to the mass of the object times it …
2. Physics: true or false

1. In a gas kept at a constant temperature, all molecules move with the same speed. A. True B. False 2. A hot object has more thermal energy than a similar cold object only because of greater kinetic energy. A. True B. False 3. The …

4. physics

If there is just one force acting on an object, does its work necessarily result in an increase in kinetic energy?
5. physics

If there is just one force acting on an object, does its work necessarily result in an increase in kinetic energy?
6. science

1. How much potential energy does a 5kg block have if it is 2m above the ground?
7. Physics

True or False: If no friction forces are present the work done by a force on an object increases either its kinetic energy or its potential energy.