Physics, 17.03.2020 19:43 acontrevas1010
Alana is skateboarding at 19 km/h and throws a tennis ball at 11 km/h to her friend Oliver who is behind her leaning against
a wall. What is the speed of the tennis ball if someone was watching the exchange on the sidewalk?
8 km/hr
11 km/hr
15 km/hr
30 km/hr
Answers: 3
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Alana is skateboarding at 19 km/h and throws a tennis ball at 11 km/h to her friend Oliver who is be...
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