What was its initial velocity?
v=u+at
u= 4-(3*5)= 4-15 =4m/s.
How far does it travel during this period?
s=ut+½at2= (4*5)+(½*3*52)= 53.5m
3. A car travelling at 20m/s decelerates uniformly at 4m/s5. In what time will it come to rest?
v=u-at, (a is negative since the body is decelerating).
0=20-4t
t=20/4 =5seconds.
Moraa orina answered the question on April 8, 2018 at 16:45
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