A student attempts to pull himself up by tugging on his hair. He will not succeed
As the force exerted is small
The frictional force while gripping, is small.
Newton's law of inertia is not applicable to living beings.
As the force applied is internal to the system.
If two balls each of mass $0.06 \,kg$ moving in opposite directions with speed $4 \,m/s$ collide and rebound with the same speed, then the impulse imparted to each ball due to other is ........... $kg-m/s$
$Assertion$ : A rocket moves forward by pushing the surrounding air backwards.
$Reason$ : It derives the necessary thrust to move forward according to Newton’s third law of motion
Force acting on a body varies with time as shown below. If initial momentum of the body is $\vec{p}$, then the time taken by the body to retain its momentum $\vec{p}$ again is ........... $s$
On a stationary sail-boat, air is blown at the sails from a fan attached to the boat. The boat will
A ball is moving with speed $20 \,m / s$ collides with a smooth surface as shown in figure. The magnitude of change in velocity of the ball will be ........... $m/s$