Question

A car accelarates from rest to a speed of 36km/h in 20 second. What is the accelaration of the car in m/s2

Answer 1

Answer:

speed = 36 km/h or 10 m /s

v = u + at

a = (v-u)/t

a= (10- 0)/20

a = 0.5 m/s^-2

Explanation:

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Answer 2

Answer:

0.5

Explanation:

Given :-

• Initial velocity,u = 0 m/s
• Final velocity,v = 36km/h =36*1000/60*60 = 10m/s
• Time,t = 20 seconds

To Find :-

• Acceleration = ?

Solution :-

We know that :-

$\rm{v= u +at}$

Put their values and solve it

$\rightarrow \rm{10 =0 +a\times 20}$

$\rightarrow \rm{10 =20a}$

$\rightarrow \rm{\dfrac{10}{20}=a}$

$\because \rm{a=0.5m/s^2}$

Therefore,acceleation of car is 0.5m/s^2