IGCSE Physics (0625) 1.5 Forces Paper 1

Question

What is weight?

  1. a frictional force

  2. a magnetic force

  3. a gravitational force

  4. an electromagnetic force

Answer/Explanation

Ans: C

Question

The diagram shows a bird in flight. The bird is flying in a horizontal direction to the right.

In which direction does air resistance act on the bird?

                                           

Answer/Explanation

Ans: D

Question

A rocket is travelling vertically upwards. Three vertical forces act on it.

The thrust acts upwards and is equal to 100 000 N. The weight acts downwards and is equal to 80 000 N.

What is the air resistance force acting on the rocket when it is travelling upwards at constant speed?

  1. 20 000 N downwards

  2. 20 000 N upwards

  3. 180 000 N downwards

  4. 180 000 N upwards

Answer/Explanation

Ans: A

Question 

On Mars, the acceleration of free fall g is 3.7 m /s2.

What is the weight of a 2.0 kg mass on Mars?

A 0.54 N

N B 1.9 N

C 7.4 N

D 20 N

Answer/Explanation

Ans: C

Question

The diagram shows a solid object on a flat surface, with two forces acting on the object.

                                               

What is the resultant force on the object?

A 1 N to the left

B 1 N to the right

C 7 N to the left

D 7 N to the right

Answer/Explanation

Ans: B

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