A ball which is thrown vertically up from the top of a tower reaches the ground in 12 seconds. Another ball thrown vertically downwards from the same position with same velocity takes 4 seconds to reach the ground. Find the height of the tower.
What is momentum? please undestand me with a example
is athletes moving in a straight line, an example of accelerated motion and why?
a car accelerates from rest at a constant rate @ for some time and then deaccelearates at a constant rate bita .if the total time elapsed is t seconds then find the maximum velocity attained
A space craft flying in a straight course with a velocity of 75 kms-1 fires it rocket motors for 6s .At the end of this time ist speed is 120 km s-1 in same direction.
find :
1. the spacecraft 's avg acceleration while motors were firing
2.the distance travelled by space craft in first 10 s after the rocket motor started , the motors have been in action for only 6s.
one end of a string 0.5 m long is fixed to a point A and the other end is fastened to a small object of weight 8 N. the object is pulled aside by a horizontal force F, untill it is 0.3 m from the vertical through A. Find the magnitude of the tension T in the string and the force F.
why in some questions, we use the concept that limiting friction = the appilied force on a body..
hows its possible ??...please xplain.
the ration of velocities acquired by a freely falling body at the end of 1 second ans 2 seconds is ____ ??
a body moving along a straight line between two places moves with a velocity V1 for the first half of time and with a velocity V2 for the second of the time, then, whats its average velocity ?
a particle moves from P to Q with uniform velocity V1 and Q to P with uniform velocity V2. if it moves along a straight line between P and Q, WHATS THE AVERAGE VELOCITY ?
A body of mas 3 kg and a body of mass 10 kg are simultaneously dropped from a height of 14.9 m.Calculate their momenta,their potential energies and kinetic energies when they are 10 m above the ground. Please give the final answer also.ITS URGENT.
an object starts from rest and accelerates uniformly at a rate of 2m/s^2 for 20s after that it maintains a constant speed for 200s then it starts to retard and comes to rest in 100s find the maximum velocity reached, retardation ,the total distance travelled and the average velocity of the object
we have been taught that displacement is the shortest distance between the final position and the initial position of the body.
A bullet initially moving with a velocity of 20 m/s strikesa target and comes to rest after penetrating a distance 10cm in the target . Calculate the retardation caused by the target .
What is the difference between position vector and displacement vector ?
A ball which is thrown vertically up from the top of a tower reaches the ground in 12 seconds. Another ball thrown vertically downwards from the same position with same velocity takes 4 seconds to reach the ground. Find the height of the tower.
What is momentum? please undestand me with a example
is athletes moving in a straight line, an example of accelerated motion and why?
a car accelerates from rest at a constant rate @ for some time and then deaccelearates at a constant rate bita .if the total time elapsed is t seconds then find the maximum velocity attained
A space craft flying in a straight course with a velocity of 75 kms-1 fires it rocket motors for 6s .At the end of this time ist speed is 120 km s-1 in same direction.
find :
1. the spacecraft 's avg acceleration while motors were firing
2.the distance travelled by space craft in first 10 s after the rocket motor started , the motors have been in action for only 6s.
one end of a string 0.5 m long is fixed to a point A and the other end is fastened to a small object of weight 8 N. the object is pulled aside by a horizontal force F, untill it is 0.3 m from the vertical through A. Find the magnitude of the tension T in the string and the force F.
why in some questions, we use the concept that limiting friction = the appilied force on a body..
hows its possible ??...please xplain.
the ration of velocities acquired by a freely falling body at the end of 1 second ans 2 seconds is ____ ??
a body moving along a straight line between two places moves with a velocity V1 for the first half of time and with a velocity V2 for the second of the time, then, whats its average velocity ?
a particle moves from P to Q with uniform velocity V1 and Q to P with uniform velocity V2. if it moves along a straight line between P and Q, WHATS THE AVERAGE VELOCITY ?
A body of mas 3 kg and a body of mass 10 kg are simultaneously dropped from a height of 14.9 m.Calculate their momenta,their potential energies and kinetic energies when they are 10 m above the ground. Please give the final answer also.ITS URGENT.
an object starts from rest and accelerates uniformly at a rate of 2m/s^2 for 20s after that it maintains a constant speed for 200s then it starts to retard and comes to rest in 100s find the maximum velocity reached, retardation ,the total distance travelled and the average velocity of the object
we have been taught that displacement is the shortest distance between the final position and the initial position of the body.
A bullet initially moving with a velocity of 20 m/s strikesa target and comes to rest after penetrating a distance 10cm in the target . Calculate the retardation caused by the target .
What is the difference between position vector and displacement vector ?