Physics · 2009
NEET 2009 · Prelims · Code A · Q5
An explosion blows a rock into three parts. Two parts go off at right angles to each other. These two are, 1 kg first part moving with a velocity of…
An explosion blows a rock into three parts. Two parts go off at right angles to each other. These two are, $\displaystyle 1$ kg first part moving with a velocity of $\displaystyle 12 m s^{-1}$ and $\displaystyle 2$ kg second part moving with a velocity of $\displaystyle 8 m s^{-1}$. If the third part flies off with a velocity of $\displaystyle 4 m s^{-1}$, its mass would be :
Official answer
(2)
$\displaystyle 5$ kg.
More from Laws of Motion
- Two bodies of mass 4 kg and 6 kg are tied to the ends of a massless string. The string passes over a pulley which is frictionless (see figure). The…2020
- A shell of mass m is at rest initially. It explodes into three fragments having mass in the ratio 2: 2: 1. If the fragments having equal mass fly off…2022
- A bob is whirled in a horizontal plane by means of a string with an initial speed of ω rpm. The tension in the string is T. If speed becomes 2 ω…2024
- A particle moving with velocity V is acted by three forces shown by the vector triangle PQR. The velocity of the particle will:2019
- A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when:2019
- A horizontal force 10 N is applied to a block A as shown in figure. The mass of blocks A and B are 2 kg and 3 kg, respectively. The blocks slide over…2024
- A rigid ball of mass m strikes a rigid wall at 60^° and gets reflected without loss of speed as shown in the figure below. The value of impulse…2016
- Calculate the maximum acceleration of a moving car so that a body lying on the floor of the car remains stationary. The coefficient of static…2023
NEET (UG) 2009 Physics question, with the answer from NTA’s final answer key. Where our answers come from.