SOALAN KBAT FIZIK (PAPER 1) CONTOH 1

Two physics students attempt to measure the speed of the water in a river, as shown in Figure  1.1

The distance between the two bridges is measured as 40 m. The student on bridge A drops a piece of wood into the water. The student on bridge B measures how long it takes for the piece of wood to reach bridge B. It takes 400 s to travel between the two bridges.

What is the speed of the water in ms^-1

A         0.05

B         0.10

C         0.20

D         50.00                                                                                        KEY:B