इस Smartphone Ki Speed आपको चौका देगी ! #shorts

A ball travelling in positive X direction with speed V0 hits a wall perpendicularly and rebounds with speed V_(0) . During the short interaction time (Delta t) the force applied by the wall on the ball varies as shown in figure. Draw the velocity-time graph for the ball during the interval 0 to Deltat

A person standin on the top of a cliff 171 ft high has to throuw a packet to his friend standing on the ground 228 ft horizontally away. If he throws the packet directly aiming at the friend wilth a speed o 15.0 ft/s, how short will the packet fall?

A boy standing on the top of a tower 36 m high has a throw a packet to his friend standing on the ground 48 m horizontally away. If the throws a packet directly aiming the friend with a speed of 10 ms^(-1) , how short will be packet fall ?

A person standing on the top of a tower 36m high has to throw a packet to his friend standing on the ground 48 m horizontally away. If the throws a packet directly aiming the friend with a speed of 10 m//s , how short will the packet fall ?

A train approachign a railway crossing at a speed of 120 kmh^-1 sounds a short whistle at frequency 640 Hz when it is 300 m away from the crossing. The speed of sound in air is 340 ms^-1 . What will be the frequency heard by a person standing on a road perpendicular to the track through the crossing at a distance of 400 m from the crossing ?

A uniform rod of mass m and length l is struck at an end by a force F perpendicular to the rod for a short time interval t. Calculate the speed of the centre of mass,

An electron with a speed of 2.60 xx 10^(8) cm//s enters and electric field of magnitude 1.00 xx 10^(3)N//C , travelling along a field in the direction that retards its motion. (a) How far will the electron travel in the field before stopping momentarily, and (b) how much time will have elapsed ? (c ) If the region containing the electric field is 8.00 mm long (too short for the electroc to stop within it),what fraction of the electrons initial energy will be lost in that region ?

During a short interval of time the speed v in m/s of an automobile is given by v=at^(2)+bt^(3) , where the time t is in seconds. The units of a and b are, respectively.

A uniform rod of mass m and length l is struck at an end by a force F perpendicular to the rod for a short time interval t. Calculate the angular speed of the rod about the centre of mass,

[A] : Tail wagging dance is performed for short distances . It conveys both the distance and speed of the scout bees . [R] : Foraging bees keep touching the scout bees through dance to get the information mainly by olfactory stimulation .