1
AIPMT 2014
+4
-1
A projectile is fired from the surface of the earth with a velocity of 5 m s$$-$$1 and angle $$\theta$$ with the horizontal. Another projectile fired from another planet with a velocity of 3 m s$$-$$1 at the same angle follows a trajectory which is identical with the trajectory of the projectile fired from the earth. The value of the acceleration due to gravity on the planet is (in m s$$-$$2) is
(Given g = 9.8 m s$$-$$2)
A
3.5
B
5.9
C
16.3
D
110.8
2
AIPMT 2014
+4
-1
A particle is moving such that is position coordinates (x, y) are (2 m, 3 m) at time t = 0, (6 m, 7 m)
at time t = 2 s and (13 m, 14 m) at time t = 5 s.

Average velocity vector $$\left( {{{\overrightarrow v }_{av}}} \right)$$ from t = 0 to t = 5 s is
A
$${1 \over 5}\left( {13\widehat i + 14\widehat j} \right)$$
B
$${7 \over 3}\left( {\widehat i + \widehat j} \right)$$
C
$$2\left( {\widehat i + \widehat j} \right)$$
D
$${11 \over 5}\left( {\widehat i + \widehat j} \right)$$
3
NEET 2013 (Karnataka)
+4
-1
Vectors $$\overrightarrow A ,\overrightarrow B$$ and $$\overrightarrow C$$ are such that $$\overrightarrow A .\overrightarrow B = 0$$ and $$\overrightarrow A .\overrightarrow C = 0$$. Then the vector parallel to $$\overrightarrow A$$ is
A
$$\overrightarrow A \times \overrightarrow B$$
B
$$\overrightarrow B + \overrightarrow C$$
C
$$\overrightarrow B \times \overrightarrow C$$
D
$$\overrightarrow B$$ and $$\overrightarrow C$$
4
NEET 2013
+4
-1
The velocity of a projectile at the initial point A is $$\left( {2\widehat i + 3\widehat j} \right)$$ m/s. It's velocity (in m/s) at point B is
A
$$2\widehat i - 3\widehat j$$
B
$$2\widehat i + 3\widehat j$$
C
$$-$$$$2\widehat i - 3\widehat j$$
D
$$-$$$$2\widehat i + 3\widehat j$$
EXAM MAP
Medical
NEET