Explain why all the velocity arrows in Figure are drawn the same length.

A toy train travels at a steady speed of $0.2 \mathrm{m}{\mathrm{s}}^{-1}$ around a circular track. A and B are two points opposite to one another on the track.

A toy train travailing around a circular track

(a) Determine the change in the speed of the train as it travels from A to B.

A toy train travels at a steady speed of $0.2 \mathrm{m}{\mathrm{s}}^{-1}$ around a circular track. A and B are two points opposite to one another on the track.

A toy train travailing around a circular track

Determine the change in the velocity of the train as it travels from A to B.

In a washing machine, the clothes are held in cylinder called a drum. The drum has holes in it that allow water to enter the drum and also to drain out of the drum.

The drum of a particular washing machine spins at a rate of 1200 rpm (revolutions per minute).

(a) Determine the number of revolutions per second of the drum.

In a washing machine, the clothes are held in cylinder called a drum. The drum has holes in it that allow water to enter the drum and also to drain out of the drum.

The drum of a particular washing machine spins at a rate of 1200 rpm (revolutions per minute).

(b) Determine the angular speed of the drum.

A car travels around a $90°$ bend in $15 \mathrm{s}$. The radius of the bend is $50 \mathrm{m}$.

(a) Determine the angular speed of the car.

A car travels around a $90°$ bend in $15 \mathrm{s}$. The radius of the bend is $50 \mathrm{m}$.

Determine the speed of the car.