Observe the figure showing the path of a body which started
from A and moved to C through B.
B
60 m
40m
4s
6s
70m
a.
C.
Calculate the speed of the body.
b. What is the velocity of the body?
What is the velocity of the body if it has taken 5 s to reach
A back from C?
d. Compare the velocity of the body when it reached from
A and also when it reached A from C.?
Answers
Answered by
1
Answer:
Magnitude of area under the v−t graph gives the distance travelled by the body.
For 0≤t≤4 s :
Displacement S
1
= Area =
2
1
×(20+40)×2+
2
1
×(1+2)×20=90 m
For 4≤t≤5 s :
Displacement S
2
= Area =
2
1
×1×20=10 m
Total distance d=S
1
+S
2
=90+10=100 m
Option A is correct.
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