Select the correct answer. Which chemical reaction absorbs energy? A. photosynthesis B. explosion C. current produced by a batte
2 answers:
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Answer:
Explanation:
given,
motion of polar bear
1.0 km south ; 1.0 km east ; 1.0 km north ; 1.0 km west
total time of the trip = 45 min
t = 0.75 hr
total distance travel by bear = 1 + 1 + 1 + 1 = 4 km
average speed of the bear = ?
hence, the average speed of the car is equal to 5.33 Km/h
The trip time taken by the box is 1.5 sec.
Explanation:
Given:
distance(d) = 30 m
Velocity(v) = 20 m/s
By using formula:
Velocity =
or, 20 =
or, time(t) =
∴ time (t) = 1.5 sec
Hence the the block took 1.5 sec to slide 30 m.