4 people in 60 minutes =
1 person in 15 minutes
3 people = 45 minutes
Answer:
a
Step-by-step explanation:
Answer : -89
Explanation: 10 times -7 is -70. -70 minus 19 is -89.
Answer:
35 m/s
Step-by-step explanation:
Let gravitational acceleration g = 9.8m/s2. We can calculate the amount of time for the ball to fall vertically a distance of 1.6 m



This is also the time it takes for the ball to fly horizontally, assume constant horizontal speed, we can calculate the speed it takes to travel across 20m in 0.571s
v = 20 / 0.571 = 35 m/s
Sorry I’m just commenting to do it