MCQ
A $50.0\ kg$ boy is sitting on an amusement park ride where he accelerates straight upward from rest to a speed of $30.0\ m/ s$ in $3.0s$
What is his mass as he accelerates upward?
  • A
    $990.0\ kg$
  • B
    $100.0\ kg$
  • $50.0\ kg$
  • D
    $5.00\ kg$

Answer

Correct option: C.
$50.0\ kg$
The mass of a body is a universal constant which does not change with acceleration. It is a property of the object itself.
Hence the mass remains the same and equal to $50.0\ kg.$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A gas can be taken from $A$ to $B$ via two different processes $ACB$ and $ADB$. When path $ACB$ is used $60\, J$ of heat flows into the system and $30\, J$ of work is done by the system. If path $ADB$ is used work down by the system is $10\, J$. the heat flow into the system in path $ADB$ is ..... $J$
A body of mass $2\, kg$ is situated at a height $5\, m$ above the ground. It's potential energy is reported as $70\, J$ . Potential energy of a $3\, kg$ body situated at height $1\,m$ above ground will be reported ................ $\mathrm{J}$
The average force necessary to stop a bullet of mass $20\, g$ moving with a speed of $250 \,m/s$, as it penetrates into the wood for a distance of $12\, cm$ is
The particle displacement of a travelling longitudional wave is represented by $\xi  = \xi (x,t)$. The midpoints of a compression zone and an adjacent rarefaction zone are represented by the letter ‘$C’$ and $‘R’$. Which of the following is true?
$A$ block of mass $M$ is placed on $a$ horizontal surface and it is tied with an inextensible string to $a$ block of mass, as shown in figure. A block of mass $m_0$ is also placed on $M$ The minimum value of $\mu$ between the block $M$ and $m_0$ (taking horizontal surface frictionless) for which all the three blocks move together, is
$A$ $4$ -kilogram disk slides over level ice toward the east at a velocity of $1$ meter per second, as shown. The disk strikes a post and rebounds toward the north at the same speed. The change in the magnitude of the eastward component of the momentum of the disk is ............. $\mathrm{kg}$ $ \cdot $ $\mathrm{m}/ \mathrm{s}$ 
A particle is projected with velocity $v_{0}$ along $x-$ axis. A damping force is acting on the particle which is proportional to the square of the distance from the origin i.e., $ma =-\alpha x ^{2}.$ The distance at which the particle stops:
The rate of change of velocity of an object with respect to time is called ..........
Speed of sound in mercury at a certain temperature is $1450 \,m/s$. Given the density of mercury as $13.6 × 10^3 kg / m^3$, the bulk modulus for mercury is
A bullet of mass $40 \,g$ is fired from a gun of mass $10 \,kg$. If velocity of bullet is $400 \,m / s$, then the recoil velocity of the gun will be ..........