Question Text
Question 2 :
An object of mass $5 kg$ is moving with a velocity of $10 {m}{S}^{-1}$. A force is applied so that in $20 s$, it attains a velocity of $25 {m}{s}^{-1}$. What is the force applied on the object?
Question 4 :
While dusting a carpet, we give it a sudden jerk or beat it with a stick because:
Question 5 :
Assertion: The familiar equation mg = R for a body on a table is true only if the body is in equilibrium.
Reason: The equality of mg and R has no connection with the third law.
Question 6 :
If the tension in the cable supporting an elevator is equal to the weight of the elevator, the elevator may be
Question 7 :
Statement 1: When a man is standing on a stationary horizontal surface, the normal force exerted by the ground on him is equal and opposite to his weight.<br/>Statement 2: According to Newton's $3^{ rd }$ law , every action has an equal and opposite reaction.