dashiabass dashiabass

05-12-2020
Physics

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7.A ball falls from rest for 0.67 seconds, what is its final speed just prior to hitting the ground?

Respuesta :

Abuzar123 Abuzar123

05-12-2020

Answer:

v = 6.57 m/s

Explanation:

if we use SUVAT equation , v = u + at

a = acceleration = 9.81 (if air resistance is negligible)

t = 0.67

u = 0 (as initial speed was 0, the ball increases the speed after)

v = 0 + (9.81)(0.67)

v = 6.57 m/s

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