directed towards the origin
directed away from the origin
parallel to the position vector
perpenticular to the position vector
P is the point of contact of a wheel and the ground .The radius of wheel is 1m .The wheel rolls on the ground without slipping .The displacement of point p when wheel completes half rotation is
2m
πm
A stone tied to the end of a string of 1m long is whiriled in a horizontal circle with a constant speed.If the stone makes 22 revolutions in 44s ,what is the magnitude and direction of acceleration of the stone?
π2/4 ms-2 and direction along the radius towards the centre
π2 ms-2 and direction along the radius away from centre
π2 ms-2 and direction along the radius towards the centre
π2 ms-2 and direction along the tangent to the circle
The speed of a boat is 5 km / h in still water.It crosses a river of width 1.0 km along the shortest possible path in 15 min.The velocity of the river water is in (km / h)
5
1
3
4
A2B
Zero
A2B sinθ
A2B cosθ
45
75
20
10
600
450
300
900
Two particle are projected with same initial velocities at angle 300 and 600 with the horizontal .Then
their height will be equal
their ranges will be equal
their time of flights will be equal
their ranges will be different
-1
1/2
-1/2
cos-1 (0.6)
