Question

A meteor changed speed from 1.8km/s to 1km/s in 0.03 seconds. What was the acceleration of the meteor

Answer 1

Answer:

$acceleration(a) = - 2.667 \times 10 {}^{4} m/s {}^{2}$

Explanation:

Greetings !

Given values :-

• final velocity (Vf) =1.8km/s
• initial velocity (Vi) =1km/s
• time(t) =0.03sec

But, change the values in km/s into m/s

Thus, 1kilometer/second=1000metres per second

so,

• 1.8km/s = 1800m/s
• 1km/s = 1000m/s

required value:-

• acceleration =?

solution/work-out:-

Firstly, recall Velocity-Time equation

• final velocity(Vf) = initial velocity (Vi) + at

Substitute known variables into the equation

$(1000) = (1800) + a(0.03)$

solve for acceleration

$a = - 2.667 \times 10 {}^{4} m/s {}^{2}$

Hope it helps!!!