9. The correct equation of motion is(a) + = + as(d) ms10. A car starting from rest accelerates uniformly to acquire a speed 20 km in 30 mindistance travelled by car in this time interval will be(a) 6 km(b) 5 km(c) 10 kmd 400 km11. The unit of velocity is :(a) km h'b) m min(c) km min!d) ms12. The unit of retardation is :(a) ms -(b) ms 2(cm13. 18 km h' is equal to :(a) 10 ms'(b) 5 ms(c) 18 ms(d) 18 ms14. A body when projected up with an initial velocity u goes to a height h in time t and thencomes back at the point of projection. The correct statement is:(a) The average velocity is 2 h/t(b) The acceleration is zero(c) The final velocity on reaching the point of projection is 2u(d) The displacement is zero15. If the displacement of an object is proportional to square of time, then the object moves with(a) Uniform velocity(b) Uniform acceleration(c) Increasing acceleration(d) Decreasing acceleration16. Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speedof 10 ms. It implies that the boy is:a At rest(b) Moving with no acceleration(c) In accelerated motion(d) Moving with uniform velocity17. Area under a vt graph represents a physical quantity which has the unit:(a) m(b) mto mº(d) ms!18. Slope of a velocity-time graph gives(a) The distance (b) The displacement (c) The acceleration (d) The speed19. A particle is moving in a circular path of radius r. The displacement after half a circle would befal Zero(b) ar(c) 2r(d) 2512:55 pm​