Activity 2: Break the Code!
Directions: Solve the following problems involving speed and velocity. Use a separate sheet
of paper for your computation. Write the matching word on the box above the answer to
decode the secret message.
Wrong
1. A baseball is thrown at a distance of 90 meters. What is its speed if it takes
2 seconds to cover the distance?
2. What is the velocity of a motorcycle travelling 60 km east in 3 hours?
speed
direction
3. What is the velocity of a rocket that goes 700,000 meters north in 25
seconds?
irrelevant
4. What is the speed of a car that went a distance of 125 kilometers in 2 hours?
going
5. A racecar travels a distance of 650 km in 2 hours. What is its speed?
Secret Message:
20 km/h east
is
62.5 km/h
if you are
325 km/h
in the
45 m/s
28,000 m/s north
Share
Answer:
1. 45 m/s
2. 20 km/h east
3. 28,000 m/s north
4. 62.5 km/h
5. 325 km/h
SPEED is IRRELEVANT if you are GOING in the WRONG DIRECTION
Explanation:
Answer:
1. 40 m/s
Explanation:
Average speed = distance travelled / time taken.
=
= 40 m/s
2. velocity=displacement or distance/time
v= 10/3
v= 3.33 km per hour
3. Displacement = 700km = 700 * 10³m
Time = 25 seconds.
We know that, Velocity = Displacement / Time
Velocity of rocket = 700* 10³ / 25 = 28 * 10³ m/s .
Therefore, The velocity is 28,000m/s .
4. 125,000 meters
125 km*(1000 m/1 km) = 125,000 meters in 2 hours.
5. 1:5