Forces and transfer of energy

Question 1

Formula for work done?

Answer 1

work done= force x distance
(N) x(m)

Question 2

Define pressure

Answer 2

Pressure is defined as the force acting on an object per unit area.

Question 3

SI unit for pressure

Answer 3

N/m2 which is equivalent to
one pascal

Question 4

formula for pressure?

Answer 4

pressure=force/area

Question 5

define work

Answer 5

work is defined as the product of force applied and distance moved in direction or force

Question 6

SI unit for energy?

Answer 6

Joules

Question 7

Formula for kinetic energy?

Answer 7

1/2mv2
mass=kg
v=speed of the object in m/s

Question 8

What can be used to measure force?

Answer 8

Spring balance

Question 9

SI unit for force?

Answer 9

Newton

Question 10

Formula to find weight?

Answer 10

weight=mass x gravitational field of earth
where the gravitational field of the earth is 10N/kg

Question 11

What are the conditions for work to be done?

Answer 11

-There is a force acting on an object
-the object moves
-the object moves in the direction of the force

Question 12

Describe the conservation of energy.

Answer 12

Energy cannot be created or destroyed. It can only be converted or transferred from one form to another.