A person whose mass is 90kg is standing on a smooth horizontal platfo – McqOptions

MCQOPTIONS

1.	A person whose mass is 90kg is standing on a smooth horizontal platform. He throws a rock of mass 10kg horizontally on the same surface. If the distance between the person and the rock after 10 seconds is 10 m, what is the kinetic energy of the person?
A.	0.45 J
B.	4.5 J
C.	0.9 J
D.	0 J
Answer» C. 0.9 J

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 ____