You push an object initially at rest across a frictionless floor

SAT

1 answer:

Ket [755]3 years ago

3 0

t = t₀ / 2

Explanation:

In this exercise we must use Newton's second law

F = m a

a = F / m

now we can use kinematics

as in object part of rest (v₀ = 0)

v =a t₀

t₀ = v / a

these results are with the first experiment

now repeat the experiment, but F = 2F₀

a = 2F₀ / m = 2 a₀

v = 2 a₀ t

t = v / 2a₀

t = t₀ / 2

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