1
JEE Main 2022 (Online) 25th July Evening Shift
+4
-1

Two billiard balls of mass 0.05 kg each moving in opposite directions with 10 ms$$-$$1 collide and rebound with the same speed. If the time duration of contact is t = 0.005 s, then what is the force exerted on the ball due to each other?

A
100 N
B
200 N
C
300 N
D
400 N
2
JEE Main 2022 (Online) 30th June Morning Shift
+4
-1

Two bodies A and B of masses 5 kg and 8 kg are moving such that the momentum of body B is twice that of the body A. The ratio of their kinetic energies will be :

A
4 : 5
B
2 : 5
C
5 : 4
D
5 : 2
3
JEE Main 2022 (Online) 29th June Morning Shift
+4
-1

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
4
JEE Main 2022 (Online) 29th June Morning Shift
+4
-1

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 :

A
3
B
6
C
5
D
4
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