Revision Quiz Bowl

1
Revision Quiz Bowl

• Units and Measurement
• Speed, Velocity and Acceleration
• Interpreting Graphs
• Forces and Newtons Laws
• Freefall

2
Round 1 True or False

• Write T for true or F for false
• Each correct answer is worth 1 point
• 5 seconds to write an answer
• All groups must raise their tag boards
• Groups with correct answers should wait for their
  scores to be tallied before erasing their answers

3
Question 1

• If a car changes direction while moving at
  constant speed, then it is accelerating.

4
Question 2

• A body that is in free fall on Earth has
  constant acceleration.

5
Question 3

• Mass changes with location.

6
Question 4

• The greater is the mass of a body, the greater
  is its inertia.

7
Question 5

• The gradient of a speed-time graph is equal to
  the distance traveled by the object.

8
Question 6

• Velocity is a vector quantity.

9
Question 7

• The base unit for mass is gram.

10
Question 8

• If an object is moving at constant velocity,
  then the net force on it is zero.

11
Question 9

• If the acceleration is opposite in direction to
  the velocity, then the object speeds up.

12
Question 10

• Air resistance on a body increases as its speed
  increases.

13
Round 2 Fill in the blank

• Complete the statement by filling in
• the correct missing word
• 10 seconds to write an answer
• Wrong spelling is wrong
• 3 points for every correct answer

14
Question 1

• _________ is the total distance divided by the
  total time taken.

15
Question 2

• The change in velocity per unit time is called
  __________.

16
Question 3

• _________ is the gravitational force on an
  object.

17
Question 4

• _________ is a number and a unit.

18
Question 5

• Force divided by mass is _____________.

19
Question 6

• The amount of matter in an object is otherwise
  known as ___________.

20
Question 7

• A _________ quantity has magnitude but no
  direction.

21
Question 8

• For every action there is an equal and
  _____________ reaction.

22
Question 9

• When air resistance balances the gravitational
  force on a body, the body moves at constant speed
  called the
• ____________ velocity.

23
Question 10

• The base unit for length is __________.

24
Round 3 Problem Solving

• Give the exact answer with correct units
• 15 seconds to write an answer
• 5 points for every correct answer

25
Question 1

• For her P.E. class, a student completes the
  three laps of 1200 m in 2 min 30 s. Find her
  average speed in the first lap in ms-1.

26
Question 1 Answer

• 8 ms-1

27
Question 2

• Calculate the total distance traveled by the car.

28
Question 2 Answer

• 2072 m

29
Question 3

• A bus moves from 3 ms-1 to a speed of 15 ms-1
  in 12 s. Determine its average acceleration.

30
Question 3 Answer

• 1 ms-2

31
Question 4

• A rocket of weight 1000 N is propelled upwards
  by a thrust of 1800 N. The air resistance is 500
  N. What is the resultant force (magnitude and
  direction) on the rocket?

32
Question 4 Answer

• 300 N, upwards

33
Question 5

• Determine the unknown mass M in the given
  figure.

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Question 4 Answer

• 200 g

35
Question 6

• A rocket has a mass of 500 kg. At lift-off, the
  rocket engine exerts an upward force of 25000 N.
  What is the acceleration of the rocket?

36
Question 6 Answer

• 4 ms-2

37
Question 7

• Calculate the speed of the car.

38
Question 7 Answer

• 20 ms-1

39
The End