A riverboat heads 5.1 m/s East on a river that flows 3.6 m/s North. What is the magnitude of the riverboat's velocity? (AKS 2a1) A)

6.2m/s

B)

8.7m/s

C)

2m/s

D)

10.5m/s

ok

explanation:

neither accurate nor precise.

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19