Author Question: For general projectile motion, the horizontal component of a projectile's acceleration A) is ... (Read 394 times)

jilianpiloj · **on:** Jul 29, 2018

For general projectile motion, the horizontal component of a projectile's acceleration

A)

is zero.
B)

remains a non-zero constant.
C)

continuously increases.
D)

continuously decreases.
E)

any of the above, depending on position.

Question 2

A person's face is 30 cm in front of a concave shaving mirror. If the image is an erect image 1.5 times as large as the object, what is the mirror's focal length?

A)

20 cm
B)

30 cm
C)

50 cm
D)

70 cm
E)

90 cm