The kinetic energy of a man is half that of a boy whose mass is half – McqOptions

MCQOPTIONS

1.	The kinetic energy of a man is half that of a boy whose mass is half that of the man. When the man speeds up by 5 m/s, his kinetic energy doubles that of the boy’s kinetic energy. What is the initial velocity of the man?
A.	5 m/s
B.	10 m/s
C.	15 m/s
D.	20 m/s
Answer» B. 10 m/s

Discussion

No Comment Found

Related MCQs

If mass (m) is doubled and velocity (v) is halved then _____
Which of the following cannot be called energy?
For the given diagram, choose the correct statement. Consider frictional forces absent.
If a solid sphere of mass 200g and radius 20cm is rotating with an angular velocity of 5 rad s-1, its rotational kinetic energy is _____
A particle of mass 200g is thrown vertically upwards with a speed of 10ms-1, the work done by force of gravity while the particle goes up is given by _____
An external force is acting on a system, the work done on the system is change in its kinetic energy.
What work must be done to stop a bullet moving with a velocity of 2000ms-1 and having a mass of 50g?
A pendulum of mass 2kg is given an energy of 200J then the maximum height it will reach is _____
At the highest point of a projectile’s trajectory, the kinetic energy is minimum and potential energy is maximum.
A particle of mass 1kg is moving with a velocity of 20ms-1 then its kinetic energy is ____