A car increases its speed with uniform rate from 20 km/h to 50 km/h in 10 seconds, average speed of car is
(1) 35 km/h
(2) 40 km/h
(3) 45 km/h
(4) 30 km/h
Answers
Answered by
0
Step-by-step explanation:
Acceleration is change in velocity per unit time
a=
(t
2
−t
1
)
(v
2
−v
1
)
v
2
−v
1
=30kmph= 30×(5/18)m/s
=
3
25
m/s
t
2
−t
1
=10s
a=
(3×10)
25
=
6
5
m/s
2
Answered by
0
Answer:
I think the answer is option (d) 30km/h
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