metro train starts from the station and under uniform acceleration it acquires a velocity of 72 km per hour ^_1 in 10 seconds calculate its acceleration and the distance covered during this time
Answers
here is your answer!!!
initial velocity => 0
final velocity => 5 / 18 * 72
=> 20 m/ s
acceleration => V - U / t
=> 20m / s - 0 m/ s / 10 sec
=> 20 m/s / 10 s
=> 2 m² / s
distance covered = speed x time
20 m/ s x 10 s
=> 200 m
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Answer:
Explanation:
Definition of acceleration:
The rate at which velocity changes is called acceleration. Acceleration typically indicates a change in speed, but not necessarily. An item that follows a circular course while maintaining a constant speed is still moving forward because the direction of its motion is shifting.
Definition of distance:
the length or width between two objects, points, lines, etc. remoteness is the state or fact of something or someone being physically distant from another. a straight line in space It would take too long to walk seven miles in one hour. a distance; a space: The ship was encircled by a sizable body of water.
Given:
Initial Velocity(u) = 0, or zero
Final velocity (v) = 72 km/hr
Time=t=10 seconds
Find:
acceleration
distance covered
Solution:
1 km/hr = 5/18 m/s
Final velocity (v) = 72 × 5/18 = 20 m/s
Speed = Final velocity = 20 m/s
Motion-based equation:
v = u + at
20 = 0 + 10a
a = (20 / 10) m/s 2
a = 2 m/s 2
distance travelled = speed x time
20 m/ s x 10 s
=> 200 m
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