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1
JEE Main 2022 (Online) 29th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Hindi

A body of mass M at rest explodes into three pieces, in the ratio of masses 1 : 1 : 2. Two smaller pieces fly off perpendicular to each other with velocities of 30 ms$$-$$1 and 40 ms$$-$$1 respectively. The velocity of the third piece will be :

A
15 ms$$-$$1
B
25 ms$$-$$1
C
35 ms$$-$$1
D
50 ms$$-$$1
2
JEE Main 2022 (Online) 29th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
English
Hindi

A block of metal weighing 2 kg is resting on a frictionless plane (as shown in figure). It is struck by a jet releasing water at a rate of 1 kgs$$-$$1 and at a speed of 10 ms$$-$$1. Then, the initial acceleration of the block, in ms$$-$$2, will be :

JEE Main 2022 (Online) 29th June Morning Shift Physics - Center of Mass and Collision Question 19 English

A
3
B
6
C
5
D
4
3
JEE Main 2022 (Online) 27th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Hindi

Two blocks of masses 10 kg and 30 kg are placed on the same straight line with coordinates (0, 0) cm and (x, 0) cm respectively. The block of 10 kg is moved on the same line through a distance of 6 cm towards the other block. The distance through which the block of 30 kg must be moved to keep the position of centre of mass of the system unchanged is :

A
4 cm towards the 10 kg block
B
2 cm away from the 10 kg block
C
2 cm towards the 10 kg block
D
4 cm away from the 10 kg block
4
JEE Main 2022 (Online) 26th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Hindi
Bengali

An object is thrown vertically upwards. At its maximum height, which of the following quantity becomes zero?

A
Momentum
B
Potential Energy
C
Acceleration
D
Force
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