Aprojectile is fired with a velocity of 45 m/s at an angle of 32°. what is the
horizontal component of the velocity?

a. 19.3 m/s
b. 45.0 m/s
c. 38.2 m/s
d. 23.8 m/s

C

Explanation:

To calculate adjacent of triangle use

where 45 is the hypotenuse, and a is the adjacent side (horizontal component)

then round to 38.2

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.