Summary questions 1. Copy and complete the sentences.
When an object moves, it is said to be in ____________. Movement in a straight line is called ____________ motion. The ____________ of an object is the distance it travels divided by the time taken. Velocity describes the speed of an object in motion and the ____________ it travels in. The rate at which the velocity of an object changes is called ____________.
2. A cyclist travels 2000 m in 6 minutes. Calculate their average speed.
3. A student leaves home at 8.20 a.m. and travels 4.2 km to school by bicycle, arriving at 8.55 a.m. They walk 400 m while in school and cycle home the same way in the evening. Calculate: a. the speed of their journey in the morning b. the total distance travelled during the day
4. A motorbike leaves town A at 11.00 a.m. and arrives in town B at 12.30 p.m. Town B is 120 km west of town A. Calculate the average velocity of the motorbike.
5. A stone drops off a building and hits the ground 6 seconds later with a velocity of 55 m/s. Calculate the acceleration of the stone.
6. a. Use the data in the following table to draw a distance-time graph: Time (s)
Distance (m)
0 0
b. Calculate the average speed at any point. 7. a. Use the data in the following table to draw a distance-time graph:
Time/s 01234 Distance (m)
0 b. Calculate the average speed at any point.
8. Use the following distance-time graph to describe the motion of the cyclist. State what happened between points:
a. A and B b. B and C c. C and D d. D and E e. E and F f. F and G
100 200 300 400 500 600
0 0 20 :Fig. 27.17 40 60 80 Time (s) 100 EF D 10203040