1. The distance time graph of a particle at time t makes an angle 450 with the time axis. After one seconds it makes an angle 600 with the time axis. What is the acceleration of the particle.
2. If the displacement of a body is proportional to square of time then:
3. The distance covered by a particle varies with time as: x=at2-bt3 The time ‘t’ of body, when its acceleration is zero, is
4. If the displacement of a body is proportional to cube of time , then:
5. The displacement x of a particle along a straight line at a time t is given by x=a0+a1t+a2t2 ; The acceleration of the particle is:
6. A particle travelling with uniform acceleration in a straight line, travels 55 m in the 8th second and 85 m in the 13th second of its motion. The initial velocity and uniform acceleration of the particle is
7. A boy completes a semicircle of radius 14 m in 10 seconds. The distance travelled by the boy is
8. A particle covers 150 m in 8th second when starts from rest, its acceleration is
9. A particle travelling with uniform acceleration in a straight line, travels 55 m in the 8th second and 85 m in the 13th second of its motion. The initial velocity and uniform acceleration of the particle is
10. A body moves along a straight line and its displacement at any time t is given by s =(t3-6t2+3t+4)m .The velocity of body, when its acceleration is zero, is