Data for an object covering distances in different intervals of time are given in the following table. Class 7
hardData for an object covering distances in different intervals of time are given in the following table. Class 7
Data for an object covering distances in different intervals of time are given in the following table. If the object is in uniform motion, fill in the gaps in the table. Class 7
| Time (s) | 0 | 10 | 20 | 30 | 50 | 70 | ||
| Distance (m) | 0 | 8 | 24 | 32 | 40 | 56 |
Speed = [latex]\frac{\text { Distance covered }}{\text { Time taken }}[/latex]
= [latex]\frac{8 \mathrm{~m}}{10 \mathrm{~s}}=\frac{8}{10}[/latex] m/s
(a) Distance = Speed × Time
= [latex]\frac{8}{10}[/latex] m/s × 20s
= 16 meter
(b) Time = [latex]\frac{\text { Distance }}{\text { Speed }} [/latex]
= [latex]\frac{32 \mathrm{~m}}{\frac{8}{10} \mathrm{~m} / \mathrm{s}} [/latex]
= [latex]\frac{32 \times 10}{8} \mathrm{~s}=40 \mathrm{~s}[/latex]
(c) Time is uniform, it is calculating at every 10 sec, so t = 60s
Distance = Speed × Time
= [latex]\frac{8}{10} \mathrm{~m} / \mathrm{s} \times 60 \mathrm{~s}[/latex] = 48m.
| Time (s) | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 |
| Distance (m) | 0 | 8 | 16 | 24 | 32 | 40 | 48 | 56 |