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Question 1 of 20

1. Question
A particle of mass 2 kg has an initial velocity $u=\left(2_{5}^{2}\right)ms^{-1}$ and-final velocity $v=\left(2_{2}^{-2}\right)ms^{-1}$ . Find the change in momentum.
- $\left(8_{-6}^{-8}\right)Ns$
- $\left(0_{6}^{0}\right)Ns$
- $\left(8_{-3}^{-8}\right)Ns$
- $\left(8_{6}^{8}\right)Ns$
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Question 2 of 20

2. Question
Calculate the magnitude of force required to move a particle of mass 3 kg from rest through a distance of 4m in 1s.
- 24N
- 16N
- 8N
- 6N
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Question 3 of 20

3. Question
Two forces 3i N and 4j N act on an object of mass 5kg. Find the acceleration of the object.
- $\left(\frac{3}{5}i+\frac{4}{5}j\right)ms^{-2}$
- $\left(\frac{4}{5}i+\frac{3}{5}j\right)ms^{-2}$
- $\left(-\frac{4}{5}i+\frac{3}{5}j\right)ms^{-2}$
- $(-3i-4j)ms^{-2}$
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Question 4 of 20

4. Question
1. A car starts from rest with a constant acceleration along a straight road and passes through a point A to point B, 120m apart in 4.0s. The speed of the car at point B is 35 ms^-1 .What is the speed of the car at point A?
- $25 ms^{-1}$
- $21 ms^{-1}$
- $20 ms^{-1}$
- $25 ms^{-1}$
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Question 5 of 20

5. Question
A car starts from rest with a constant acceleration along a straight road and passes through a point A to point B, 120m apart in 4.0s. The speed of the car at point B is 35 ms^-1. What is the acceleration of the car?
- $8 ms^{-2}$
- $6.7 ms^{-2}$
- $2.5 ms^{-2}$
- $1.67 ms^{-2}$
Correct

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Question 6 of 20

6. Question
A car starts from rest with a constant acceleration along a straight road and passes through a point A to point B, 120m apart in 4.0s. The speed of the car at point B is 35 ms^-1 .What distance, correct to the nearest metre, did the car cover before reaching A?
- 166m
- 160m
- 125m
- 110m
Correct

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Question 7 of 20

7. Question
An electric lamp hangs vertically from a light cord attached to the ceiling of an elevator. The elevator is descending with a deceleration of 2ms and tension in the cord is 25N. What is the mass of the lamp?
- 2.1kg
- 3.2kg
- 3.5kg
- 4.0kg
Correct

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Question 8 of 20

8. Question
An electric lamp hangs vertically from a light cord attached to the ceiling of an elevator. The elevator is descending with a deceleration of 2ms and tension in the cord is 25N. What is the tension in the cord when the elevator is ascending with an acceleration of 2 ms^-2 ?
- 15.0 N
- 16.4 N
- 17.0N
- 25.0 N
Correct

Incorrect
Question 9 of 20

9. Question
A body moving in linear motion starts with an initial velocity of 5 ms^-1. Its acceleration after 10s is 6 ms^-2.What is its velocity at this instance?
- $30 ms^{-1}$
- $50 ms^{-1}$
- $55 ms^{-1}$
- $65 ms^{-1}$
Correct

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Question 10 of 20

10. Question
A body of mass 1 kg moving with velocity u = 4i + 3j collides and combines with a mass of 2kg moving with velocity v = 4i -3j, calculate their common velocity.
- 4i – j
- 16i
- 24i
- 12i + 9j
Correct

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Question 11 of 20

11. Question
A force of 10N acts in the direction of 060⁰ and a force of 6N also acts in the direction 330⁰. Find the y component of their resultant.
- $(3+3\sqrt3)N$
- $(3+5\sqrt3)N$
- $(5+3\sqrt3)N$
- $(5+5\sqrt3)N$
Correct

Incorrect
Question 12 of 20

12. Question
What force is required to make a 4kg box resting on a horizontal table just to move when pulled horizontally ?
- 1.20 N
- 2.94 N
- 11.76 N
- 39.20 N
Correct

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Question 13 of 20

13. Question
Determine the greatest height reached when a particle is projected vertically upwards from a given point with velocity 20ms^-1. [Take g = 10 ms^-2]
- 2m
- 20m
- 200m
- 400m
Correct

Incorrect
Question 14 of 20

14. Question
A body of mass 3kg moving with velocity 20ms ^-1 collides with a body Q of mass 5kg. After collision the bodies move with a velocity 35ms^-1. Find the velocity of Q before collision.
- $78 ms^{-2}$
- $62 ms^{-2}$
- $56 ms^{-2}$
- $44 ms^{-2}$
Correct

Incorrect
Question 15 of 20

15. Question
If the force F = (5N, 045⁰), find 3F
- (15N, 135°)
- (15N, 045°)
- (5N, 135°)
- (5N, 045°)
Correct

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Question 16 of 20

16. Question
A body of mass m moving with a velocity of v₁ = 2i + 3j, brings to rest a body of mass 6kg moving in the opposite direction with a velocity of v₂ = 6i + 9j. Find the mass m.
- 15kg
- 18kg
- 21kg
- 25kg
Correct

Incorrect
Question 17 of 20

17. Question
A particle is projected upwards from a point O with a speed of 10ms^-1. [Take g = 10ms^-1]. What is the greatest height reached by the particle?
- 5m
- 10m
- 50m
- 100m
Correct

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Question 18 of 20

18. Question
A particle is projected upwards from a point O with a speed of 10ms^-1. [Take g = 10ms^-1]. Find the time when the particle is 2.5m from the point O.
- $4-2\sqrt2sec$
- $4+2\sqrt2sec$
- $1-2\sqrt2secc$
- $1+\frac{\sqrt2}{2}\sqrt2sec$
Correct

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Question 19 of 20

19. Question
A car of mass 10³ kg travelling at 60ms^-1 is brought to rest in 2 seconds, when the brakes are applied. Find the magnitude of the braking force.
- $60 X 5^{3} N$
- $30 X 5^{3} N$
- $3.0 X 10^{4} N$
- $1.2 X 10^{5} N$
Correct

Incorrect
Question 20 of 20

20. Question
F₁ = (3i + 4j) and F₂ = (3i -4j) N. Find the magnitude and direction of F₁ + F
- (6N, 000°)
- (6N, 090°)
- (6N, 180°)
- (6N, 270°)
Correct

Incorrect

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