" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
dane:
a = 6 m/s² = 6 N/kg
F = 3 N
szukane:
m = ?
m = F/a = 3N/6N/kg = 0,5 kg
Odp. c) 0,5 kg
18.
dane:
v = 0,6 m/s
t = 3 s
F = 6 N
szukane:
m = ?
m = F * a
a = v/t = 0,6m/s /3s = 0,2 m/s²
m = 6N * 0,2m/s²
m = 1,2 kg
19.
dane:
v₀ = 0
m = 1 t = 1000 kg
t = 20 s
s = 400 m
szukane:
F = ?
s = at²/2 |*2
at² = 2s /:t²
a = 2s /t² = 2*400m:(20s)² = 2 m/s²
F = m * a
F = 1000kg * 2m/s²
F = 2 000 N = 2 kN
11.
dane:
m = 5 kg
a = 2 m/s² = 2 N/kg
szukane:
F = ?
F = m * a
F = 5kg * 2N/kg
F = 10 N
Odp. d)
15.
dane:
m = 2 kg
F = 10 N
szukane:
a = ?
a = F/m
a = 10N /2kg = 5 N/kg
a = 5 m/s²
Odp. b)