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2.)
F = 30 N
m = 2 kg
a = ...

a = F / m
= 30 / 2 = 15 m/s²

3.)
m = 4 kg
F = 10 N
a = ....

a = F / m
= 10 / 4 = 2,5 m/s²

4.)
α = 30°
m = 2 kg
g = 10 m/s²

N = ...
vt = ...

N = w cos α
= mg cos α
= 2 • 10 • cos 30°
= 20 • ½ √3
= 10√3 N

a = g sin α
= 10 • sin 30°
= 10 • ½ = 5 m/s²

vt = at
vt = 5 • 3 = 15 m/s

5.)
a = 2 m/s²
m = 40 kg
g = 10 m/s²
N = ...

N = m(g + a)
= 40(10 + 2)
= 40 • 12
= 480 N