Posted by **Melissa** on Thursday, January 23, 2014 at 2:41pm.

Assume that an MX missile goes from rest to a suborbital velocity of 4.50 km/s in 30.0 s (the actual speed and time are classified). What is its average acceleration in m/s2?

What is its average acceleration in multiples of g?

- College Physics -
**Damon**, Thursday, January 23, 2014 at 2:44pm
acceleration = change in velocity/change in time

=4500 m/s / 30 s

= 150 m/s^2

or about 15 g

- College Physics -
**Melissa**, Thursday, January 23, 2014 at 2:47pm
can you tell me how you got that? I have a test soon and I seriously don't get it

- College Physics -
**Damon**, Thursday, January 23, 2014 at 3:11pm
I used the definition of acceleration

acceleration is how much your velocity changes per second.

so here it is the change in speed which is zero to 4500 m/s (1000 times the 4.5 because that was kilometers)

in 30 seconds.

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