Answered

Discover the answers you need at Westonci.ca, a dynamic Q&A platform where knowledge is shared freely by a community of experts. Experience the ease of finding reliable answers to your questions from a vast community of knowledgeable experts. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

Help!!! This is worth 30 points pls pls pls help help help



A tennis player bounces a tennis ball downwards with her racket. determine how fast the tennis ball is moving after it has moved 0.5 m downwards, assuming it was initially moving downwards at 4 m/s and accelerates downwards at 10m/s^2

Sagot :

WeatherForecast

Answer:

The tennis ball is moving 6m/s.

Explanation:

displacement(s) = 0.5 m

intial velocity(u) = 4 m/s

acceleration(a) = 10 m/s²

As we know,

2as = v²-u²

or, 2 ×10 × 0.5 = v²-4²

or, 10 = v²-16

so, v² = 36

so, v (final velocity) = 6 m/s
  • Initial velocity=u=4m/s
  • Acceleration=a=10m/s^2
  • Distance=s=0.5m
  • Final velocity=v=?

Apply third equation of kinematics

[tex]\\ \tt\hookrightarrow v^2=u^2+2as[/tex]

[tex]\\ \tt\hookrightarrow v^2=4^2+2(10)(0.5)[/tex]

[tex]\\ \tt\hookrightarrow v^2=16+10[/tex]

[tex]\\ \tt\hookrightarrow v^2=26[/tex]

[tex]\\ \tt\hookrightarrow v\approx 5m/s[/tex]

Thank you for choosing our platform. We're dedicated to providing the best answers for all your questions. Visit us again. We hope this was helpful. Please come back whenever you need more information or answers to your queries. Get the answers you need at Westonci.ca. Stay informed by returning for our latest expert advice.