Sarah throws the ball a second time, straight up in the air with an initial velocity of 19.62 m/s. However, this time she lets the ball land on the floor, 1.00 m below where she threw the ball from. How long will the ball be in the air before it hits the floor?

the part of the wave he is travelling on is the crest

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.