Question

PLS HELP HELP I DONT WANT TO FAIL

An airplane accelerates down a 1000-m stretch of runway at +5m/s^2. How fast is it moving at the end of this stretch of runway?

Answer 1

• Initial velocity=0m/s
• Acceleration=a=5m/s^2
• Distance=s=1000m

• Final velocity is v

Apply thrid equation of kinematics

`\\ \tt\longmapsto v^2=u^2+2as`

`\\ \tt\longmapsto v^2=2(5)(1000)`

`\\ \tt\longmapsto v^2=10000`

`\\ \tt\longmapsto v=100m/s`