1Define speed and velocity, and write the formula and unit for each.
2Write four differences between speed and velocity.
3Dolma walks 1800 m along road A in 30 minutes. Find her speed. If the straight distance to the same place is 1200 m, find her velocity.
4Why can the speed of a journey never be less than its velocity?
5A car goes flat out round a circular track, covering one lap of 4000 m in 100 s. Find its speed and its velocity for that lap.
6A car travels at a speed of 30 m/s. How long will it take to cover 80 km?
7Rahima walks from P to Q in 1 minute and Q to R in 2.5 minutes. PQ is 32 m, QR is 78 m and the straight line PR is 100 m. Find her speed and velocity.
8An object covers 100 m in 5 seconds. Find its speed.
9Why do speed and velocity get confused so easily, and how do you tell them apart in a question?
10A bus is said to have averaged 30 km/h to Pokhara. Does that mean its speedometer read 30 throughout the journey?