Question

if a particle is moving with a speed of 20m/sec along x axis after 10sec the distance travelled by the partical is 80m then then calculate the velocity of partical after travelling this distance.

Answer 1

Soln: From the data given in the problem we have,

Initial velocity = u =0,

final velocity v=20 m/sec,

Time of journey t=4sec,

Acceleration a =  = = 5 

Displacement S = ut +  = 0 (4)+

S = 40m.