directed towards the origin
directed away from the origin
parallel to the position vector
perpenticular to the position vector
A bus is moving on a straight road towards north with a uniform speed of 50 km/h .If the speed remains unchanged after turning through 900,the increase in the velocity of bus in the turning process is
70.7 km/h along south - west direction.
zero
50 km/h along west
70.7 km/h along north- west direction
A bullet is fired a gun with a speed of 1000 m/s in order to hit a target 100 m away.At what height above the target should the gun be aimed ? (The resistance of air is negligible and g=10 m /s2)
5 cm
10 cm
15 cm
20 cm
A particle starting from the orgin (0,0) moves in a straight line in the (x,y) plane .Its coordinates at a later time are (√3 , 3).The path of the particle makes with the x-axis an angle of
300
450
600
00
A boat is sent across a river with a velocity of 8km-1.If the resultant velecity of boat is 10kmh-1,then velocity of river is
12.8kmh-1
6kmh-1
8kmh-1
10kmh-1
900
A2B
Zero
A2B sinθ
A2B cosθ
45
75
20
10
Two bodies of same mass are projected with the same velocity at an angle 300 and 600 respectively. The ratio of their horizontal ranges will be
1:1
1:2
1:3
2:√2
A
zero vector
unit vector
