.
1
2
3
4
1>4>3>2
2>3>4>1
4>3>2>1
1>2>3>4
450 m/s
225 m/s
332 m/s
625 m/s
None of these
Particle 1 will reach the ground first
All the particles will reach the ground simultaneously
All the particles will hit the ground with same speed
Only particle 2 and 3 will hit the ground with same speed
Wait!
Here's an interesting quiz for you.