QUESTION 1

When a particle undergoes a uniform ............................ ?/ decelerated motion, with acceleration ?/ ........................a, .......................travelled at constant .....................delta t increase / decrease at constant ................. a*(delta t) squared

1. When a particle undergoes a uniformly ?/ decelerated motion, with acceleration ?/ ?a, ?travelled at constant ?delta t increase / decrease at constant ?a*(delta t) squared?

5 points ?

QUESTION 2

When the net force on a body is zero, the body will accelerate

When the net force on a body is zero, the body will accelerate?

?True? ??False

2 points ?

QUESTION 3

1. A book rests on top of the table and a child starts pushing the book across the table top.

   Which forces must not appear on the free body diagram of the book?

   	a.	the child?s pushing force
   	b.	The book?s weight
   	c.	none of a), b), c) and d).
   	d.	the normal reaction of the table top ??
   	e.	All of a), b) and c).

1 points ?

QUESTION 4

1. A plane takes off at an angle of 45? from a horizontal runway and keeps this direction following a straight path 10 km long. How high is the plane above the horizontal ground surface?

   a.

   10?km?

   ?

   b.

   5 km?

   ?

   c.

   ?km ?

   ?

   d.

   ??km?

   ?

   e.

   ?None of (a), (b), (c), and (d)

   ?

1 points ?

QUESTION 5

1. A Newton is equivalent to which of the following?

   	a.	Kilogram-meter per second squared?
   	b.	Kilograms-meter per secon
   	c.	None of the above?
   	d.	Kilogram per meter second?
   	e.	Meter per second squared?

1 points ?

QUESTION 6

1. A horse is accelerating a cart loaded with hay, at a m/s2. The empty cart mass is 100 kg and the hay?s mass is 500kg. Assuming the horse?s force remains constant, what would be the acceleration of the cart, if the fell sideway off the cart?

   A.

   a m/s2? ? ? ? .

   ?

   B.

   None of A, B, C and D.

   ?

   C.

   a/6 m/s2? ? ??

   ?

   D.

   6a m/s2? ? ? ?

   ?

   E.

   5a m/s2? ? ? ?

   ?

1 points ?

QUESTION 7

1. A boy throws a stone from ground level, vertically upward in space, ?with a velocity of 6m/s. How long will the stone last in space?

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2 points ?

QUESTION 8

1. Which of the following quantities is equivalent to 3 Mg (megagrams)?

   a.

   None of a, b, c and d

   ?

   b.

   3000000 mg?

   ?

   c.

   30000 kg

   ?

   d.

   3 tonnes?

   ?

   e.

   0.3 Gg

   ?

1 points ?

QUESTION 9

1. The forces in a couple must be:

   	a.	parallel and non-collinear
   	b.	opposite in direction
   	c.	All of a), b) and c)
   	d.	none of a), b), c) and d)
   	e.	equal in magnitude

1 points ?

QUESTION 10

1. A man stands on a lift which is descending at constant speed. If the push of the lift on the man is P and the pull of the earth on him is W, then the net force on the man is:

   	a.	A fraction of W vertically downward?
   	b.	Zero?
   	c.	None of the above?
   	d.	Slightly greater than W, vertically downwards
   	e.	Slightly greater than P, vertically upwards?