RE - QUIZ 1 (DJJ30093) 10%

Which are the following is a vector quantity? (1 mark)

• Force, position, mass and velocity.

• Mass, length and time

• Force, velocity and acceleration

• Mass, time, length and volume.

Which are the following is a scalar quantity? (1 mark)

• Force, position, mass and velocity.

• Length, mass, time and velocity.

• Force, velocity, acceleration and volume

• Mass, time and length

Find the result of adding two coplanar forces 4N at 90⁰ and 2N at 0. (2 marks)

• R = 5.47

• R = 4.47

• R = 6.47

• R = 7.47

Identify the most suitable theorem to determine angle in figure below.(1 mark)

• Cosine Law

• Sine Law

• Trigonometric function

• Hooke's Law

Refer to the figure, which total forces for the x-components. (2 marks)

• - 400 - 200 cos 52.4° + 250 cos 45⁰

• 400 - 200 cos 36.8° + 250 sin 45⁰

• - 400 + 200 sin 52.4° + 250 sin 45⁰

• - 400 - 200 cos 36.8° + 250 sin 45⁰

Refer to the figure, Total force for the y-components is? (2 marks)

• 250 sin 45⁰ + 200 sin 36.8°

• 250 cos 45⁰ + 200 cos 36.8°

• 250 sin 45⁰ + 200 sin 52.4°

• 250 sin 45⁰ + 200 cos 52.4°

Refer to the figure, Determine the resultant force. (1 marks)

• 475

• 485

• 458

• 465