Page 199 - Physics

Linear motion

(a) They have the same weight. Which pair of quantities could be
(b) There is usually no resistance represented by P and Q?
in the air. P Q
(c) Acceleration due to gravity is (a) acceleration force of air resistance
the same. (b) acceleration time
(d) They move in the same (c) velocity force of air resistance
direction. (d) velocity time

(v) The graph shows how quantity A (vi) A bus was travelling at a speed
varies with quantity B for a body of 20 m/s. When the bus was
projected vertically upwards in a 50 m from a traffi c light, the light
uniform gravitational fi eld with air turned red. The bus driver reacted
resistance. immediately and applied a constant
braking force for 5.0 s. The bus

decelerated at 4.0 m/s . Which of

2
A the following correctly describes
the motion of the bus?
(a) The bus stopped past the traffi c
light.
(b) The bus stopped at the traffi c
light.
(c) The bus stopped before the
traffi c light.
(d) The bus continued to move past
O B
Figure 8.30 the traffi c light with decreasing
speed.

2. Match the items in column A against the corresponding item from column B by
writing the correct response in the answer column.
Column A Answer Column B

(a) Distance (i) Metres per second
(b) Velocity (ii) 0 m/s and stops

(c) Displacement (iii) Rate of change of velocity
(d) Acceleration (iv) Path of an object
(v) 10 m/s
2
(e) Maximum
altitude (vi) Speed in metres
(f) Final velocity (vii) Has magnitude only
(viii) Momentarily stops
(g) Gravitational
acceleration (ix) Distance in a specifi c direction

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Physics Form 1 Final.indd 193 16/10/2024 20:58