Question 193: Laws of Motion

Question

Which one of the following person is in an inertial frame of reference?

Accepted Answer

Change in momentum is given by the area under the F - t graph.
$$ \begin{aligned} & 	ext { Area }=8 	imes 0.5+4 	imes 0.5 \ & =4+2=6 \mathrm{~N}-\mathrm{s} \ 	herefore & \mathrm{mv}=6 \mathrm{~N}-\mathrm{s} \ 	herefore & \mathrm{v}=\frac{6}{3}=2 \mathrm{~m} / \mathrm{s} \end{aligned} $$

Answer

A person (man) in a train which is slowing down to stop.

Answer

A person (child) revolving in a merry-goround.

Answer

A person (driver) in a bus which is moving with constant velocity.

Answer

A person (pilot) in an aeroplane which is taking off.

Laws of Motion

Which one of the following person is in an inertial frame of reference?

Choose the correct answer: