Question

A bullet is fired with a speed of 1000 m/s squared to hit a target 100 m away . If g=10 m/s squared , the gun should be aimed at

a) directly towards target

b) 5 cm below target

c) 5 cm above target

d) 15 cm above target

Answer 1

Distance=100m
Speed=1000m/s
Time=100/1000
=0.1s
substitute t in eqn s=ut+0.5at^2
Since u is zero s=0.5at^2
=0.5*10*0.1^2
=0.05m
=5 cm
Since value is positive
Gun must be aimed at 5cm above target
Option 3 is correct