Physics 9 Chapter 3 - Dynamics - 10

Physics 9 Chapter 3 - Dynamics - 10

1. 1 N =.............?

a) 1 kgms^-2
b) 1 kgms^-1
c) 1 kgms¹
d) 1 kgms²

2. Find the acceleration that is produced by a 20 N force in a mass of 8 kg?

a) 160 ms^-2
b) 28 ms^-2
c) 2.5 ms^-2
d) 12 ms^-2

3. Find the acceleration that is produced by a 40 N force in a mass of 10 kg?

a) 4 ms^-2
b) 400 ms^-2
c) 30 ms^-2
d) 50 ms^-2

4. Find the acceleration that is produced by a 15 N force in a mass of 5000 g?

a) 4985 ms^-2
b) 0.003 ms^-2
c) 3 ms^-2
d) 10 ms^-2

5. Find the force acting on a body of mass 5 kg that produces an acceleration of 10 ms^-2?

a) 15 N
b) 2 N
c) 50 N
d) 5 N

6. Force acting on a body of mass 5 kg produces an acceleration of 10 ms^-2. What acceleration the same force will produce in a body of mass 8 kg?

a) 18 ms^-2
b) 13 ms^-2
c) 15 ms^-2
d) 6.25 ms^-2

7. A force of 200 N moves body with an acceleration of 20 ms^-2. What is its mass?

a) 180 kg
b) 220 kg
c) 10 kg
d) 4000 kg

8. Find the force acting on a body of mass 10 kg that produces an acceleration of 10 ms^-2?

a) 100 N
b) 1 N
c) 0 N
d) 20 N

9. Find the force acting on a body of mass 50,000g that produces an acceleration of 10 ms^-2?

a) 500 N
b) 5 N
c) 500,000 N
d) 5000 N

10. A cyclist of mass 40 kg exerts a force of 200 N to move his bicycle with an acceleration of 3 ms^-2. How much is the force of friction between the road and the tyres?

a) 200 N
b) 80 N
c) 40 N
d) 120 N

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