please tell the answer i mark brainliest
Answers
Answer:
Explanation:
Q3) here the given data
a girl runs
distance = 100 m
time taken = 20 seconds.
case one = speed of girl running per hour
one hour = 3600 seconds.
distance time
100m 20s
? 3600s
by cross multiplying we have
distance covered by the girl in one hour = 100 * 3600/20
= 18,000m
speed of the girl = distance / time
= 18000/3600
=50 m/s
case two
per minute.
one minute = 60 seconds
distance covered by the girl in one minute = 60 * 100/20
=300 m
speed of the girl = distance / time
= 300/60
= 5 m/s
case three
per second
distance travelled by the girl per second = 1 * 100/20
= 5m
speed of the girl = distance covered / time taken
= 5/1
= 5m/s
Answer:
MARK ME AS THE BRAINIEST ANSWER ❤️❤️
Explanation:
A bus moves with a speed of 80km/h for 15 minutes. Here; speed = 80 km/hr and time = 15 min = 0.25 hr. So, the distance covered by the bus in first half is 20 km