11.6 Gradients and areas under graphs — Practise
Work independently in order. The later questions mix this section with earlier methods. Questions marked H are Higher only.
- H A velocity rises from 2 m/s to 10 m/s in 4 seconds. Find the gradient.
- H A velocity-time graph shows 6 m/s for 5 seconds. Find distance travelled.
- H Velocity rises uniformly from 0 to 8 m/s in 4 seconds. Find distance travelled.
- H Velocity changes uniformly from 4 to 10 m/s over 3 seconds. Find distance.
- H A velocity-time line goes from (0,3) to (5,13). Find the acceleration.
- H What does the area under a velocity-time graph represent?
- H A runner moves at 4 m/s for 3 seconds, then 2 m/s for 5 seconds. Find total distance.
- H Water flows at 2 litres per minute for 7 minutes. Find volume transferred using rate times time.
- H Find the gradient between and , then say if it is greater than the gradient from to .
- H A velocity-time graph rises from 0 to 12 m/s in 6 s, then stays at 12 m/s for 4 s. Find total distance.
Answers and concise solutions
1. Question 1
Answer: 2 m/s²
2. Question 2
Answer: 30 m
3. Question 3
Answer: 16 m
4. Question 4
Answer: 21 m
5. Question 5
Answer: 2 m/s²
6. Question 6
Answer: Distance travelled
7. Question 7
Answer: 22 m
8. Question 8
Answer: 14 litres
9. Question 9
Answer: 3; no, 3 is less than 2.5 is false
10. Question 10
Answer: 36+48=84 m