Question: The dimensions of impulse are equal to that of: [PMT/NEET-1996]
a. pressure
b. linear momentum
c. force
d. angular momentum
Solution
Impulse $J = F \cdot \Delta t$.
$
= (MLT^{-2})(T) = MLT^{-1}
$
Linear momentum $p = mv = M(LT^{-1}) = MLT^{-1}$.
So impulse and linear momentum have same dimensions.
Answer
b. linear momentum