Which statement best explains Newton's Third Law of Motion?
For every action, there is an equal and opposite reaction
Newton's third law states that whenever one body exerts a force on another, the second body exerts an equal and opposite force on the first; forces always act in pairs.
Example: a rocket pushes gases backward and the gases push the rocket forward.
F = ma and the inverse relation of acceleration with mass come from the second law, and energy conservation is a separate law.
Hence, For every action, there is an equal and opposite reaction.
Which principle explains how rockets are propelled forward when fuel is ejected in the opposite direction?
A stone is moving in a circular path with constant speed. Which of the following statements about its motion is correct?
Which of the following scenarios best illustrates the principle of conservation of momentum?
Which of the following scenarios best illustrates the principle of conservation of momentum?
Which of the following is correct?
I. The mass of an object is a measure of its inertia
II. In an isolated system the total momentum remains conserved
A 20.0 kg block is placed on a smooth horizontal table. A horizontal force of 12.0 Newton is applied to the block. The position of the block at 5.0 sec is
A subway train starts from rest at a station and accelerates at a rate of 3 ms-2 for 10s. It then runs at a constant speed for 20s and decelerates at 5 ms-2 unit it stops at the next station. The distance between the two stations is:
In a desert, a beetle's motion sends fast longitudinal pulses, vL = 150 ms-1, and slower transverse pulses, vS = 50 ms-1, along the sand's surface. The sand scorpion has eight legs; spread roughly in a circle of 5 cm diameter, intercepts the faster longitudinal pulses 4.0 ms earlier than the slower transverse pulse. The pray is located at a distance of: