JEE Main 2020 (Online) 4th September Morning Slot | Motion Question 88 | Physics

JEE Main 2020 (Online) 4th September Morning Slot

MCQ (Single Correct Answer)

-1

A Tennis ball is released from a height h and after freely falling on a wooden floor it rebounds and reaches height $${h \over 2}$$. The velocity versus height of the ball during its motion may be represented graphically by :
(graph are drawn schematically and on not to scale)

JEE Main 2020 (Online) 4th September Morning Slot Physics - Motion Question 90 English Option 1

JEE Main 2020 (Online) 4th September Morning Slot Physics - Motion Question 90 English Option 2

JEE Main 2020 (Online) 4th September Morning Slot

MCQ (Single Correct Answer)

-1

Starting from the origin at time t = 0, with initial velocity 5$$\widehat j$$ ms^-1 , a particle moves in the x-y plane with a constant acceleration of $$\left( {10\widehat i + 4\widehat j} \right)$$ ms^-2. At time t, its coordinates are (20 m, y₀ m). The values of t and y₀ are, respectively:

5s and 25 m

2s and 18 m

2s and 24 m

4s and 52 m

JEE Main 2020 (Online) 2nd September Morning Slot

MCQ (Single Correct Answer)

-1

Train A and train B are running on parallel tracks in the opposite directions with speeds of 36 km/hour and 72 km/hour, respectively. A person is walking in train A in the direction opposite to its motion with a speed of 1.8 km/ hour. Speed (in ms^–1) of this person as observed from train B will be close to :
(take the distance between the tracks as negligible)

30.5 ms^–1

29.5 ms^–1

31.5 ms^–1

28.5 ms^–1

JEE Main 2020 (Online) 9th January Evening Slot

MCQ (Single Correct Answer)

-1

A particle starts from the origin at t = 0 with an
initial velocity of 3.0 $$\widehat i$$ m/s and moves in the
x-y plane with a constant acceleration $$\left( {6\widehat i + 4\widehat j} \right)$$ m/s² . The x-coordinate of the particle at the instant when its y-coordinate is 32 m is D meters. The value of D is :-