Question

#3 is the tough one for me I get it but I don't can you help me and tell me how you got that answer as soon as possible.

Answer 1

1) 2 minutes = 2 x 60 = 120 seconds
2) 1500 meters per second x 120 seconds = 180 000 meters = 180 km

Answer 2

1 minute equals 60 seconds so 60+60 Equals 120. Then 1500 times 120 equals 180,000 equal 180km