please help me!!!
physics
kinematics
Answers
Answer 7 :
★ Option i) 120 m, -40 m
Explanation :
Distance covered by the body = OA + AO + OB
→ Distance covered = 40 + 40 + 40
→ Distance covered = 120 m
Displacement covered = OB (shortest Distance between the initial and the final point)
→ Displacement = -40 m (In the negative direction)
Answer 8 :
★ Option 3) 80m, 0
Explanation :
Total Distance covered = Going upwards + Coming down
→ Total Distance = 40 + 40
→ Total distance = 80 m
Total Displacement = 0
Here, displacement is 0 because when the body is projected upwards it reaches back to it's initial position.
Answer 9 :
★ Option 4) H + 2H, H
Explanation :
Total Distance covered = H + H + H
→ Total Distance = 3 H
Total Displacement of the body = H
After projection it reaches to it's initial position i.e. H
Answer 10 :
★ Option a) √52 m, 26 m
Explanation :
Total Displacement = Shortest distance AB
→ (AB)² = OB² + OA²
→ (AB)² = 6² + 4²
→ AB² = 36 + 16
→ AB² = 52
→ AB = √52
Refer to the attachment.
Total Distance covered = 2 + 8 + 4 + 12
→ Total distance = 26 m
Answer 11 :
★ Option 3) East Direction
Explanation :
