A car accelerates uniformly from 18km to 80km in 15sec . Find the acceleration of the bus ?
Answers
Answered by
2
Step-by-step explanation:
Acceleration = Change in Velocity/Time
Change in Velocity = 36-18 = 18 km/h=5 m/s
Time= 5 Seconds
Acceleration = 5/5= 1 m/s2
Equation of motion,s=ut+(1/2)at2
u=18 km/h=5 m/s
t=5 s
a=1 m/s2
s= (5*5)+(1/2*1*5*5)
s=25+12.5 i.e., s=37.5 m
Hope you are clear with my explanations
Answered by
4
ANSWER:
Acceleration of the bus = 0.33 m/s²
COVERSIONS USED:
1 kmph = 1000/3600 m/s
1 kmph = 5/18 m/s
GIVEN:
u = 18 kmph = 18 × 5/18 = 5 m/s
v = 36 kmph = 36 × 5/18 = 10 m/s
t = 15 s
TO FIND:
Acceleration of the bus = ?
FORMULA:
v = u + at
EXPLANATION:
10 = 5 + a(15)
15 a = 5
a = 15/5
a = 1/3 m/s²
a = 0.33 m/s²
Acceleration of the bus = 0.33 m/s²
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