Question 298: Laws of Motion

Question

When a person walks on a rough surface, the frictional force exerted by the surface on the person is opposite  to the direction of his motion.

Accepted Answer

Explanation :
A rocket's propulsion in space (and even in the atmosphere) does not depend on pushing against the surrounding air. Instead, it relies on Newton's third law of motion: every action has an equal and opposite reaction. By expelling hot gases (the exhaust) at high speed out of its nozzle, the rocket produces a forward thrust. This mechanism works in the vacuum of space just as well as in an atmosphere, proving that it does not depend on air.
Correct Option :
B) FALSE

Answer

TRUE

Answer

FALSE

Answer

TRUE

Answer

FALSE

Laws of Motion

When a person walks on a rough surface, the frictional force exerted by the surface on the person is opposite to the direction of his motion.

Choose the correct answer: