Problem Explanation and Solution
The worksheet focuses on the relationship between
Speed,
Distance, and
Time, using the formula:
\[
\text{Speed} = \frac{\text{Distance}}{\text{Time}}
\]
We will solve each problem step by step.
---
####
Problem 1:
Sidek travels 450 km in 5 hours. What was his speed in km/h?
1.
Identify the given values:
- Distance (\(D\)) = 450 km
- Time (\(T\)) = 5 hours
2.
Use the formula for speed:
\[
\text{Speed} = \frac{\text{Distance}}{\text{Time}}
\]
3.
Substitute the values:
\[
\text{Speed} = \frac{450 \, \text{km}}{5 \, \text{hours}}
\]
4.
Perform the division:
\[
\text{Speed} = 90 \, \text{km/h}
\]
5.
Fill in the blanks:
- Speed = 450 ÷ 5 = 90 km/h
Answer:
\[
\boxed{90}
\]
---
####
Problem 2:
Munirah runs 200 m in 25 seconds. What is her speed in m/s?
1.
Identify the given values:
- Distance (\(D\)) = 200 m
- Time (\(T\)) = 25 seconds
2.
Use the formula for speed:
\[
\text{Speed} = \frac{\text{Distance}}{\text{Time}}
\]
3.
Substitute the values:
\[
\text{Speed} = \frac{200 \, \text{m}}{25 \, \text{seconds}}
\]
4.
Perform the division:
\[
\text{Speed} = 8 \, \text{m/s}
\]
5.
Fill in the blanks:
- Speed = 200 ÷ 25 = 8 m/s
Answer:
\[
\boxed{8}
\]
---
####
Problem 3:
A shuttlecock travels 750 cm in 3 seconds. What is the speed of the shuttlecock in cm/s?
1.
Identify the given values:
- Distance (\(D\)) = 750 cm
- Time (\(T\)) = 3 seconds
2.
Use the formula for speed:
\[
\text{Speed} = \frac{\text{Distance}}{\text{Time}}
\]
3.
Substitute the values:
\[
\text{Speed} = \frac{750 \, \text{cm}}{3 \, \text{seconds}}
\]
4.
Perform the division:
\[
\text{Speed} = 250 \, \text{cm/s}
\]
5.
Fill in the blanks:
- Speed = 750 ÷ 3 = 250 cm/s
Answer:
\[
\boxed{250}
\]
---
Final Answers:
1. \(\boxed{90}\)
2. \(\boxed{8}\)
3. \(\boxed{250}\)
Parent Tip: Review the logic above to help your child master the concept of speed formula worksheet.
