Using dimensional analysis, which one of the following equations ...

[sarasara]

Using dimensional analysis, which one of the following equations is dimensionally correct? ( a  m/s2, v  m/s, x  m , t  s)
 
  A) x = v/t
  B) v = 2ax
  C) t2 = x/a
  D) x2 = 2av
  E) x = a t

Question 2

An antitank weapon fires a 3.0 kg rocket which acquires a speed of 50. m/s after traveling 90. cm down a launching tube. Assuming the rocket was accelerated uniformly, what force acted on it?
 
  A) 4.2 kN
  B) 3.6 kN
  C) 2.8 kN
  D) 2.0 kN
  E) 5.8 kN

[dajones82]

Answer to Question 1

C

Answer to Question 2

A

[sarasara]

Excellent

[jackie]

TYSM