could someone please calculate these for me?

Question

1.The acceleration of a 82 kg couch that is pushed across the floor with an unbalanced force of 21 N?
2. The force needed to accelerate a 1357kg car forward at 8.0 m/s2?
3.The mass in kg of an object that weighs 1225 N on Earth?
4.What unbalanced force is needed to give a 976kg car an acceleration of 2.50 m/s2?
5. A FORCE OF 240.0 N causes an object to accelerate at 3.2 m/s2. What is the mass of the object?
6. A 0.25kg steel ball experiences a net force of 1.15 N as it rolls down a ramp. What is the acceleration of the ball?
7. The velocity of a 90.5kg man running south with a momentum of 389kg. M/s?
8. What is the momentum of a 10.0kg dog chasing a rabbit north at 6.0 m/s?

Answer 1

1 F=ma
a=21/82

2 F=1357*8

3 Using g=9.81 m/s^2
m=1225/9.81

4 F=976*2.5

5 m=240/3.2

6 m= 1.15/0.25

7 Momentum = m*v
v=389/90.5

8 '=10*6

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