Question 12:
The speed-time graph in Diagram 7 shows the motion of an object for a period of t seconds.
(a) Calculate
(i) uniform speed,
(ii) the rate of change of speed, in ms-2, of the object in the first 5 seconds.
[3 marks]
(b) Find the value of t, if the distance travelled by the object for the first 5 seconds if half the distance travelled at uniform speed. [3 marks]
Solution:
(a)(i)
Laju seragam = 10 ms-1
(a)(ii)
(b)
The speed-time graph in Diagram 7 shows the motion of an object for a period of t seconds.
(a) Calculate
(i) uniform speed,
(ii) the rate of change of speed, in ms-2, of the object in the first 5 seconds.
[3 marks]
(b) Find the value of t, if the distance travelled by the object for the first 5 seconds if half the distance travelled at uniform speed. [3 marks]
Solution:
(a)(i)
Laju seragam = 10 ms-1
(a)(ii)
(b)