A car covers 30 km at a uniform speed of 60km/hr, and the next 30 km at a uniform speed of 40km/hr. Find out the total time taken for the journey ?
30 min
45 min
75 min
120 min
A particle moving with an initial velocity of 5 m/s is subjected to uniform acceleration of -2.5 ms-2.Calculate the displacement in the next 4 seconds ?
40 m
0m
20m
60m
A body is moving along a circle of radius r. Calculate the values of distance and displacement in half the revolution ?
2πr,πr
πr, 2r
πr2,r
2πr,2r
What is the acceleration of a body moving with uniform velocity ?
Zero
+1
-1
Infinity
The position of a particle going along a straight line is x1 = 50 m at 10.30a.m. and x2 = 55 m at 10.35 a.m.The displacement between 10.30 a.m and 10.35 a.m. is :
2 m
5 m
7 m
9 m
Which represent position- velocity relation?
v=u+at
s=ut+1/2 at2
2as=v2-u2
K E = ( mv2) / 2
An object is sliding down an inclined plane. The velocity changes at a constant rate from 10cm/s to 15cm/s in 2 seconds.Calculate the acceleration of the body ?
5 cm/s2
3cm/s2
2.5 cm/s2
4.5 cm/s2
The velocity- time graph of a body has negative slope. The body is under going:
Uniform acceleration
Uniform retardation
Variable acceleration
Variable retardation
For motion on a straight line path with constant acceleration,the ratio of magnitude of displacement and the distance covered is :
= 1
> 1
< 1
≤ 1
