1

JEE Main 2020 (Online) 8th January Evening Slot

MCQ (Single Correct Answer)

+4

-1

A particle moves such that its position
vector $$\overrightarrow r \left( t \right) = \cos \omega t\widehat i + \sin \omega t\widehat j$$ where $$\omega $$ is a constant and t is time. Then which of the following statements is true for the velocity
$$\overrightarrow v \left( t \right)$$ and acceleration $$\overrightarrow a \left( t \right)$$ of the particle :

2

JEE Main 2019 (Online) 12th April Evening Slot

MCQ (Single Correct Answer)

+4

-1

Two particles are projected from the same point with the same speed u such that they have the same range R,
but different maximum heights, h

_{1}and h_{2}. Which of the following is correct ?3

JEE Main 2019 (Online) 12th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

A shell is fired from a fixed artillery gun with an initial speed u such that it hits the target on the ground at a
distance R from it. If t

_{1}and t_{2}are the values of the time taken by it to hit the target in two possible ways, the product t_{1}t_{2}is -4

JEE Main 2019 (Online) 12th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

The trajectory of a projectile near the surface of the earth is given as y = 2x – 9x

^{2}. If it were launched at an angle $$\theta $$_{0}with speed v_{0}then (g = 10 ms^{–2}) :Questions Asked from Motion in a Plane (MCQ (Single Correct Answer))

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