Question

A bullet is fired with a speed of 720 m/s.

a.What time is required for the bullet to strike a target at a position +324 m?

b.What is the velocity in km/h?

Answer 1

0.9s

2592km/hr

Step-by-step explanation:

Given parameters:

Final velocity of the bullet = 720m/s

Distance covered = 324m

Unknown:

Time for the bullet to strike a target = ?

Velocity in km/h

Solution:

To solve this problem, we use the kinematics equation shown below:

S =(
`(v + u)/(2)`) t

So;

324 =
`(720 + 0)/(2)` t

324 = 360t

t = 0.9s

B. to convert this velocity to km/hr

1000m = 1km

3600s = 1hr

720 x m x
`(1)/(s)` x
`(1km)/(1000m)` x
`(3600s)/(1hr)` = 2592km/hr