Starting from a stationary position , Rahul paddles his bicycle to attain a velocity of 6 m/s in 30 s. Then he applies brakes such that the velocity of bicycle comes down to 4m/s in the next 5s . Calculate the acceleration of the bicycle in both the cases.

A car accelerates uniformly from 18 km//h to 30 km//h in 5s . Calculate the acceleration.

A truck travelling at a speed at a speed of 25 m s^-2 ,slows down to a speed of 5 m s^-1 in 10 s.Calculate the acceleration of the truck during these 10 seconds.

A car accelerates uniformly from 18 km/h to 30 km/h in 5s. Calculate the distance covered by the car in that time.

Give the graphical repesentation of displcament, velocity and acceleration of particle in S.H.M.

A particule travelling due east at 2 m s^-1 is uniformly accelerated at 5 m s^-2 for 4 sec.Calculate the displacement of the particle.

A cyclist is riding with a speed of 27 km//h . As he approaches a circular turn on the road of radius 80 m, he applies brakes and reduces his speed at the constant rate of 0.50 m//s every second. What is the magnitude and direction of the net acceleration of the cyclist on the circular turn ?

The velocity of an e in excited state of H-atom is 1.093 xx 10^(6)m//s , what is the circumference of this orbit?

An object of mass 100 kg is accelerated uniformly from a velocity of 5 ms^(-1) to 8 ms^( -1) in 6s. Calculate the initial and final momentum of the object. Also find the force exerted on the object.