Kinematics Quiz

Do you know how to rearrange an equation that involves fractions? Choose an equation that you know from your previous physics course, such as , and rearrange it to make R or V the subject of the formula.

Can you write down a direction using compass bearings, for example, as 014°, N14°E or 14° east of north?

How can the photograph be used to calculate the speed of the upper ball horizontally and vertically as it moves through the air? What other apparatus is needed? You can discuss this with someone else.

Look at Figure 1.2. The runner has just run 10 000 m in a time of 27 minutes 5.17 s. Calculate his average speed during the race.

Which of these units would be appropriate when stating the speed of each of the following? a tortoise, a car on a long journey, light, a sprinter.

• m/s

• km/h

• mm/s

• km/s

A snail crawls 12 cm in one minute. What is its average speed in mm/s?

A trolley with a 5.0 cm long card passed through a single light gate. The time recorded by a digital timer was 0.40 s. What was the average speed of the trolley in m s−1?

Figure 1.7 shows two ticker-tapes. Describe the motion of the trolleys that produced them.

Four methods for determining the speed of a moving trolley have been described. Each could be adapted to investigate the motion of a falling mass. Choose two methods that you think would be suitable, and write a paragraph for each to say how you would adapt it for this purpose.

Do these statements describe speed, velocity, distance or displacement? (Look back at the definitions of these quantities.) The ship sailed south-west for 200 miles. I averaged 7 mph during the marathon. The snail crawled at 2 mm s−1 along the straight edge of a bench. The sales representative’s round trip was 420 km.