1
NEET 2019
+4
-1
When an object is shot from the bottom of a long smooth inclined plane kept at an angle 60o with horizontal, it can travel a distance x1 along the plane. But when the inclination is decreased to 30o and the same object is shot with the same velocity, it can travel x2 distance. Then x1 : x2 will be :
A
1 : $$\sqrt 2$$
B
$$\sqrt 2$$ : 1
C
1 : $$\sqrt 3$$
D
1 : 2$$\sqrt 3$$
2
NEET 2019
+4
-1
A particle moving with velocity $$\overrightarrow V$$ is acted by three forces shown by the vector triangle PQR. The velocity of the particle will :
A
remain constant
B
increase
C
decrease
D
change according to the smallest force $$\overrightarrow {QR}$$
3
NEET 2017
+4
-1
The x and y coordinates of the particle at any time are x = 5t $$-$$ 2t2 and y = 10t respectively, where x and y are in metres and t in seconds. The acceleration of the particle at t = 2 s is
A
5 m s$$-$$2
B
$$-$$4 m s$$-$$2
C
$$-$$8 m s$$-$$2
D
0
4
NEET 2016 Phase 2
+4
-1
In the given figure, a = 15 m s$$-$$2 represents the total acceleration of particle moving in the clockwise direction in a circle of radius R = 2.5 m at a given instant of time. The speed of the particle is

A
4.5 m s$$-$$1
B
5.0 m s$$-$$1
C
5.7 m s$$-$$1
D
6.2 m s$$-$$1
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