If you stand next to a wall on a frictionless skateboard and push the wall with a force of 40n, how hard does the wall push on you? if your mass is 80 kg, show that your acceleration is 0.5m/s2.

Question

Zayden Vaughan

Physics

30 June, 01:09

If you stand next to a wall on a frictionless skateboard and push the wall with a force of 40n, how hard does the wall push on you? if your mass is 80 kg, show that your acceleration is 0.5m/s2.

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Yahir Fritz · Answer 1

The wall pushes back with the same force you exert so 40N.

to show your acceleration is. 5m/s^2 use newtons second law F=ma

so plugging in numbers gives 40N=80kg*a knowing that a newton is equal 1kgm/s^2 we could write 40kg*m/s^2 = 80kg*a so solving for a gives

40kg*m/s^2/80kg = a we see the kg's cancel and we're left with

(40m/s^2) / 80=a which gives. 5m/s^2=a