Question

A bullet is fired horizontally with speed v from a rifle. For a short time t after leaving the rifle, the only force affecting its motion is
gravity. The acceleration of free fall is g. Which expression gives the value of
the horizontal distance travelled in time t/the vertical distance travelled in time t?

Answer 1

a) vt/g
b) v/gt
c) 2vt/g
d) 2v/gt

Answer 2

g affects only vertical motion not horizontal motion

Answer 3

So v=gt?

Answer 4

horiz distance = vt
vert distance = v0t+(1/2)gt^2 = g*t^2 / 2

the ratio = \[\frac{vt}{gt^2\over2}=\frac{2v}{gt}\]

Answer 5

get it?

Answer 6

Okay. Thank you.