Author Question: Which of the following quantities are units of impulse? (There could be more than one correct ... (Read 54 times)

Zoey63294 · **on:** Jul 29, 2018

Which of the following quantities are units of impulse? (There could be more than one correct choice.)

A) N m
B) kg s/m
C) kg m/s
D) N s
E) kg m2/s2

Question 2

A bat, flying toward the east at 2.0 m/s, emits a shriek that is reflected back to it from a wall that is 20.0 m in front of the bat at the instant the shriek is emitted. Sound travels at 340 m/s in the air.

How many milliseconds after emitting the shriek does the bat hear the reflected echo from the wall?