Question

1 Marks Questions
Q1. What is the work done when a body is
moved horizontally along a frictionless
surface?
Q2. Define 1 Joule.
Q3. What is the work done on a body moving
in a circular path?
Q4. When is work said to be done against the
force of gravity?
Q5. Define 1 watt.
Q6. What is kinetic energy?
Q7. What will happen to the Kinetic Energy of
a body if its velocity is doubled?
Q8. Name four units of energy.
Q9. In a tug of war, one team gives way to
other. What work is being done and by
whom?​

Answer 1

Answer:

Q. 6)What is kinetic energy?

Answer: energy which a body possesses by virtue of being in motion.

Q.7)What will happen to the Kinetic Energy of

What will happen to the Kinetic Energy ofa body if its velocity is doubled?

Answer: Hence, when velocity is doubled, kinetic energy becomes 4 times.

Q. 8)Name Four units of energy.

Answer:1.Barrel of oil.

2.Calorie.

3.Horsepower.

4.Joule (J)

Q. 9)In a tug of war, one team gives way to

In a tug of war, one team gives way toother. What work is being done and by

In a tug of war, one team gives way toother. What work is being done and bywhom?

Answer : Work is being done by the winning team. Work done = resultant force applied by the two teams x displacement of the loosing team.