Question #ed040

1 Answer
Mar 24, 2017

Answer:

See below

Explanation:

The total mechanical energy, #E#, is the sum of the kinetic energy, #T = 1/2 m v^2#, and the potential energy, #V(x)# as mentioned.

If all the energy is kinetic, then # 1/2 v^2 =2#, as #m = 1#

So, # v^2 =4 implies v = pm 2#

As speed #= abs v#, we go with (1)

:)