As you pump up your pressure rocket, it expels water in the bottle downward and rocket moves upward. This is ……
a) action
b) reaction
c) hydraulic pressure
d) none of these
Explanation: A water rocket is a type of model rocket using water as its reaction mass. The water is forced out by a pressurized gas, typically compressed air. Like all rocket engines, it operates on the principle of Newton's third law of motion. Water rocket hobbyists typically use one or more plastic soft drink bottle as the rocket's pressure vessel. A variety of designs are possible including multi-stage rockets. Water rockets are also custom-built from composite materials to achieve world record altitudes.
Exercise:
A football is at rest on ground the forces acting on it are……
a) zero
b) balanced
c) unbalanced
d) uncountable
An object moving in a circle uniformly the forces acting on it are……..
a) zero
b) balanced
c) unbalanced
d) uncountable
The unit of buoyant force is…….
a)pascal
b) newton
c) buoyancy
d) pressure
Which of the following quantities is measured in units of pascal?
a) friction
b) buoyancy
c) pressure
d) force
I think A option is correct
by at 2025-03-26 06:14:00