A car starts from rest at point O and accelerates uniformly on a straight road for 10 seconds until it reaches point A with a speed of 20 m/s (Stage OA). At point A, the car continues with a constant speed of 20 m/s for 3 minutes (Stage AB). When reaching point B, the brakes are applied and the car decelerates at a constant rate until it stops at point C. The distance travelled by the car from B to C is 20 m (Stage BC). What is the distance covered in stage 1? VA= 20 m/s Vy = 20 m/s a) 60 m b) 80 m c) 100 m d) 120 m e) 140 m A OA = ? OA 10 s AB-? BC = 20 m AB= 180 s a, = ? e

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Chapter1: Units, Trigonometry. And Vectors
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A car starts from rest at point O and accelerates uniformly on a straight road for
10 seconds until it reaches point A with a speed of 20 m/s (Stage OA).
At point A, the car continues with a constant speed of 20 m/s for 3 minutes
(Stage AB).
When reaching point B, the brakes are applied and the car decelerates at a
constant rate until it stops at point C. The distance travelled by the car from B to
C is 20 m (Stage BC).
What is the distance covered in stage 1?
Vo=0
VA= 20 m/s
20 m/s
60 m
B
b) 80 m
c) 100 m
d) 120 m
e) 140 m
OA = ?
loA 10 s
AB -?
BC = 20 m
A= 180 s
a = ?
a
e
Transcribed Image Text:A car starts from rest at point O and accelerates uniformly on a straight road for 10 seconds until it reaches point A with a speed of 20 m/s (Stage OA). At point A, the car continues with a constant speed of 20 m/s for 3 minutes (Stage AB). When reaching point B, the brakes are applied and the car decelerates at a constant rate until it stops at point C. The distance travelled by the car from B to C is 20 m (Stage BC). What is the distance covered in stage 1? Vo=0 VA= 20 m/s 20 m/s 60 m B b) 80 m c) 100 m d) 120 m e) 140 m OA = ? loA 10 s AB -? BC = 20 m A= 180 s a = ? a e
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