Question

9. The correct equation of motion is
(a) + = + as
(d) ms
10. A car starting from rest accelerates uniformly to acquire a speed 20 km in 30 min
distance travelled by car in this time interval will be
(a) 6 km
(b) 5 km
(c) 10 km
d 400 km
11. The unit of velocity is :
(a) km h'
b) m min
(c) km min!
d) ms
12. The unit of retardation is :
(a) ms -
(b) ms 2
(
cm
13. 18 km h' is equal to :
(a) 10 ms'
(b) 5 ms
(c) 18 ms
(d) 18 ms
14. A body when projected up with an initial velocity u goes to a height h in time t and then
comes 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 zero
15. 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 acceleration
16. Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed
of 10 ms. It implies that the boy is:
a At rest
(b) Moving with no acceleration
(c) In accelerated motion
(d) Moving with uniform velocity
17. Area under a vt graph represents a physical quantity which has the unit:
(a) m
(b) m
to mº
(d) ms!
18. Slope of a velocity-time graph gives
(a) The distance (b) The displacement (c) The acceleration (d) The speed
19. A particle is moving in a circular path of radius r. The displacement after half a circle would be
fal Zero
(b) ar
(c) 2r
(d) 2512:55 pm​

Answer 1

Answer:

heyy it's not math question

Answer 2

V square equal to u square plus 2as