IGCSE Physics (0625) Paper 2 -Unit 1. General physics-1.5.5 Scalars and vectors

Question

Which quantity is a vector?

  1. acceleration

  2. distance

  3. speed

  4. mass

Answer/Explanation

Ans: A

Question

A boat starts moving across a river at velocity v perpendicular to the river bank.

The boat encounters a current along the river of velocity u, as shown.

   

Which vector diagram shows the resultant velocity r of the boat?

         

Answer/Explanation

/>Ans: C

Question

Which is the value of a vector quantity?

A.200 V

B. 100 kg / m^3

C. 20 m / s, east

D. 50 J / (kg °C)

Answer/Explanation

Ans: C

Question

A ball of weight 1.2 N drops through the air at terminal velocity.

A sudden gust of wind exerts a horizontal force of 0.5 N on the ball from the left.

Which diagram shows the resultant force on the ball while the wind is blowing?

Answer/Explanation

Ans: C

Question

A scalar quantity has

A. magnitude and direction.

B. no magnitude and no direction.

C. magnitude but no direction.

D. direction but no magnitude.

Answer/Explanation

Ans: C

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