1
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

A ball is projected with a velocity, 10 ms$$-$$1, at an angle of 60$$^\circ$$ with the vertical direction. Its speed at the highest point of its trajectory will be

A
Zero
B
5$$\sqrt3$$ ms$$-$$1
C
5 ms$$-$$1
D
10 ms$$-$$1
2
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
A particle moving in a circle of radius R with a uniform speed takes a time T to complete one revolution.

If this particle were projected with the same speed at an angle '$$\theta$$' to the horizontal, the maximum height attained by it equals 4R. The angle of projection, $$\theta$$, is then given by :
A
$$\theta = {\sin ^{ - 1}}{\left( {{{2g{T^2}} \over {{\pi ^2}R}}} \right)^{1/2}}$$
B
$$\theta = {\cos ^{ - 1}}{\left( {{{g{T^2}} \over {{\pi ^2}R}}} \right)^{1/2}}$$
C
$$\theta = {\cos ^{ - 1}}{\left( {{{{\pi ^2}R} \over {g{T^2}}}} \right)^{1/2}}$$
D
$$\theta = {\sin ^{ - 1}}{\left( {{{{\pi ^2}R} \over {g{T^2}}}} \right)^{1/2}}$$
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
A car starts from rest and accelerates at 5m/s2. At t = 4 s, a ball is dropped out of a window by a person sitting in the car. What is the velocity and acceleration of the ball at t = 6 s? (Take g = 10 m/s2)
A
20$$\sqrt 2 $$ m/s, 10 m/s2
B
20 m/s, 5 m/s2
C
20 m/s, 0
D
20$$\sqrt 2 $$ m/s, 0
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
A particle moving with velocity $$\overrightarrow V $$ is acted by three forces shown by the vector triangle PQR. The velocity of the particle will : NEET 2019 Physics - Motion in a Plane Question 11 English
A
remain constant
B
increase
C
decrease
D
change according to the smallest force $$\overrightarrow {QR} $$

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