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Sagot :

Answer:

By order:

21.  a = F/m

F = 52N    m = 4kg

a = 52N/4kg  a = 52kg(m/s^)/4kg  

a = 13 m/s^2

Answer: The acceleration of the object is 13m/s^2

22. a = F/m

F = 61N    m = 5kg

a = 61N/5kg  a = 61kg(m/s^2)/5kg  

a = 12.2 m/s^2

Answer: The acceleration of the object is  12.2 m/s^2

23. a = F/m

F = 300N   m = 25kg

a = 300N/25kg   a = 300kg(m/s^2)/25kg

a = 12 m/s^2

Answer: The acceleration is 12 m/s^2

24. F = ma

m = 10kg   a = 2m/s^2

F = (10kg)(2m/s^2)

F = 20N

Answer: The force required is 20N

35.  m = F/a

F = 17N    a = 1.5m/s^2

m = 17N/1.5m/s^2     m = 17kg(m/s^2)/1.5m/s^2

m = 11.3 kg

Answer: The mas of the object is 11.3kg

36. a = F/m

F = 3N   m = 10kg

a = 3N/10kg  a = 3kg(m/s^)/10kg

a = 0.3m/s^2

Answer: the acceleration of the object is 0.3m/s^2

Hope this helps!