1
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1

A particle is executing uniform circular motion with velocity $$\vec{v}$$ and acceleration $$\vec{a}$$. Which of the following is true?

A
$$\vec{v}$$ is a constant; $$\vec{a}$$ is not a constant
B
$$\vec{v}$$ is not a constant; $$\vec{a}$$ is not a constant
C
$$\vec{v}$$ is a constant; $$\vec{a}$$ is a constant
D
$$\vec{v}$$ is not a constant; $$\vec{a}$$ is a constant
2
NEET 2023
MCQ (Single Correct Answer)
+4
-1

A bullet is fired from a gun at the speed of $$280 \mathrm{~ms}^{-1}$$ in the direction $$30^{\circ}$$ above the horizontal. The maximum height attained by the bullet is

$$\left(g=9.8 \mathrm{~ms}^{-2}, \sin 30^{\circ}=0.5\right)$$:-

A
2000 m
B
1000 m
C
3000 m
D
2800 m
3
NEET 2023
MCQ (Single Correct Answer)
+4
-1

A horizontal bridge is built across a river. A student standing on the bridge throws a small ball vertically upwards with a velocity $$4 \mathrm{~m} \mathrm{~s}^{-1}$$. The ball strikes the water surface after $$4 \mathrm{~s}$$. The height of bridge above water surface is (Take $$g=10 \mathrm{~m} \mathrm{~s}^{-2}$$ )

A
60 m
B
64 m
C
68 m
D
56 m
4
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

A cricket ball is thrown by a player at a speed of 20 m/s in a direction 30$$^\circ$$ above the horizontal. The maximum height attained by the ball during its motion is

(g = 10 m/s2)

A
25 m
B
5 m
C
10 m
D
20 m
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