What is the acceleration of the sled, assuming it is constant?

Question

A rocket-driven sled running on a straight,

level track has been used to study the physiological

effects of large accelerations on astronauts.

One such sled can attain a speed of

361 m/s in 1.8 s starting from rest. Answer in units of m/s^2

Answer 1

Carole,

 

The formula here is v(Final)=v(initial)+at where v is speed, a is acceleration and t is time. Starting from rest means v(initial) is zero. v(Final) is 361. So 361=0+a(1.8), making a=200.56m/s^2.

 

Hope that helps!