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3 years ago

What is a car's acceleration if it increases its speed from 5 m/s to 20 m/s in 3 s?

Physics

2 answers:

liberstina [14]3 years ago

8 0

the correct answer would be C. 5m/s^2

20-5 = 15

15/3 = 5

nata0808 [166]3 years ago

6 0

Answer : The acceleration of the car is, $5m/s^2$

Explanation :

By the 1st equation of motion,

$v=u+at$ ...........(1)

where,

v = final velocity = 20 m/s

u = initial velocity = 5 m/s

t = time = 3 s

a = acceleration of the car = ?

Now put all the given values in the above equation 1, we get:

$20m/s=5m/s+a\times (3s)$

$a=5m/s^2$

Therefore, the acceleration of the car is, $5m/s^2$

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$\sin\theta_{1} =0.68$

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