Page 82 - CT&AI_CLasa_7_Part_1

8. A student is timing a simple pendulum. (a) 70 km/h (b) 80 km/h
She notices that it takes 30 seconds for the
pendulum to complete 15 full oscillations (c) 93.3 km/h (d) 100 km/h
(back-and-forth swings). What is the "Time
Period" of this pendulum? 10. A cheetah can run at 108 km/h. A high-speed
drone can fly at 25 m/s. If they race in a
(Algorithmic Thinking)
straight line for 10 seconds, who covers more
(a) 0.5 seconds distance? (Algorithmic Thinking)

(a) The Cheetah, because 108 is a
(b) 2.0 seconds
much higher number than 25.
(c) 15 seconds
(b) The Drone, because m/s is a faster
(d) 45 seconds unit than km/h.

9. A train departs from Station A at 10:00 AM and (c) The Cheetah, because its speed is
arrives at Station B at 1:30 PM. The distance actually 30 m/s.
between the stations is 280 km. However, the
train stopped for 30 minutes at a midway (d) They will cover the same distance
station. What was the train's average speed as both have equal speeds.
for the entire journey (including the stop)?

(Abstract Thinking)

A train travels between two stations. The data is given below:

Time (min) Distance (km)
5 2
10 4
15 4
20 8
What does the table suggest about the train's movement?

(a) Uniform motion throughout the journey.

(b) Train was at rest for some time.

(c) Speed is constant.

(d) Distance decreases.

80 Computational Thinking-7 (Science)