Question

A powerful missile reaches a speed of 5 kilometers per second in 10 seconds after its launch. What is the average acceleration of the missile during this period?

A.
0.2 meters/second2
B.
0.4 centimeters/second2
C.
0.5 meters/second2
D.
0.5 kilometers/second2

Answer 1

D

Step-by-step explanation:

5 Km=5000m

so Δv=5000 m/sec

a=Δv/Δt

=5000/10

a=500 m/sec² as 500÷1000=0.5 Km

a=0.5 km/sec²

so D is the right answer.