1
JEE Main 2019 (Online) 10th April Morning Slot
+4
-1
Two particles, of masses M and 2M, moving, as shown, with speeds of 10 m/s and 5 m/s, collide elastically at the origin. After the collision, they move along the indicated directions with speeds u1 and u2, respectively. The values of u1 and u2 are nearly : A
6.5 m/s and 3.2 m/s
B
6.5 m/s and 6.3 m/s
C
3.2 m/s and 6.3 m/s
D
3.2 m/s and 12.6 m/s
2
JEE Main 2019 (Online) 9th April Evening Slot
+4
-1
A particle of mass 'm' is moving with speed '2v' and collides with a mass '2m' moving with speed 'v' in the same direction. After collision, the first mass is stopped completely while the second one splits into two particles each of mass 'm', which move at angle 45° with respect to the origianl direction. The speed of each of the moving particle will be :-
A
2 $$\sqrt2$$v
B
v / (2 $$\sqrt2$$ )
C
v / $$\sqrt2$$
D
$$\sqrt2$$v
3
JEE Main 2019 (Online) 9th April Morning Slot
+4
-1
A body of mass 2 kg makes an eleastic collision with a second body at rest and continues to move in the original direction but with one fourth of its original speed. What is the mass of the second body ?
A
1.2 kg
B
1.0 kg
C
1.8 kg
D
1.5 kg
4
JEE Main 2019 (Online) 9th April Morning Slot
+4
-1
A ball is thrown vertically up (taken as +z-axis) from the ground. The correct momentum-height (p-h) diagram is :
A B C D JEE Main Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Coordinate Geometry
Calculus
EXAM MAP
Joint Entrance Examination