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A motorist drives north for 32.0 minutes at 80.5 km/h and then stops for 15.0 minutes. He then continues north, traveling 130 km in 1.80 h.(a) What is his total displacement?

Question

A motorist drives north for 32.0 minutes at 80.5 km/h and then stops for 15.0 minutes. He then continues north, traveling 130 km in 1.80 h.

(a) What is his total displacement?
check_circleAnswer
Step 1

Total displacement of the motorist...

Speed of the motorist in first 32 minutes is V
80.5 km / h
Displacement in first 32 minutes is
(velocity) x (time) = (80.5 m) x (32 min
S1
42.93 km
=
60 min
Since the motorist stops for 15 minutes ,displacement during that 15 minutes is zero
Displacement in last 1.8 hours is 130 km
Total displacement is 42.93 km
130 km -172.93 km
0
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Speed of the motorist in first 32 minutes is V 80.5 km / h Displacement in first 32 minutes is (velocity) x (time) = (80.5 m) x (32 min S1 42.93 km = 60 min Since the motorist stops for 15 minutes ,displacement during that 15 minutes is zero Displacement in last 1.8 hours is 130 km Total displacement is 42.93 km 130 km -172.93 km 0

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