Advertisements
Advertisements
प्रश्न
According to the third law of motion, action and reaction :
विकल्प
always act on the same body but in opposite directions
always act on different bodies in opposite directions
have same magnitudes and directions
act on either body at normal to each other
Advertisements
उत्तर
always act on different bodies in opposite directions.
APPEARS IN
संबंधित प्रश्न
Using a horizontal force of 200 N, we intend to move a wooden cabinet across a floor at a constant velocity. What is the friction force that will be exerted on the cabinet?
According to the third law of motion, when we push on an object, the object pushes back on us with an equal and opposite force. If the object is a massive truck parked along the roadside, it will probably not move. A student justifies this by answering that the two opposite and equal forces cancel each other. Comment on this logic and explain why the truck does not move.
A girl weighing 25 kg stands on the tloor. She exerts a downward force of 250 N on the floor. What force does the floor exert on her ?
Do action and reaction act on the same body or different bodies ? How are they related in magnitude and direction ? Are they simultaneous or not ?
If a man jumps out from a boat, the boat moves backwards. Why ?
Explain why, a runner presses the ground with his feet before he starts his run.
Give a scientific reason.
Even though the magnitudes of action force and reaction forces are equal and their directions are opposite, their effects do not get cancelled.
While catching a cricket ball the fielder lowers his hands backwards. Why?
“Wearing helmet and fastening the seat belt is highly recommended for safe journey” Justify your answer using Newton’s laws of motion.
What is the main characteristic of action and reaction forces?
