a car travels along a straight line with speed 40 km per hour from a to b and returns back from B to a with speed 60 km per hour find the average speed of the car
Answers
Answer:
= 48 km/hr
Explanation:
Given :
40 km/hr from A to B
60 km/hr from B to A
To find :
• Average Speed
Solution:
let the distance covered from A to B = x
so, total distance
= A to B + B to A
= x + x
= 2x
• speed = Distace / Time
• Time = distance / speed
from A to B :
Time = x / 40
from B to A :
time = x/60
Total Time :
= x/40 + x/60
= 5x/120
average speed :
= Total distance/ total time
= 2x ÷ 5x/120
= 2x × 120/5x
= 240/5
= 48 km/hr
Answer:
The correct answer is 48 km/hr
Explanation:
Given :
40 km/hr from A to B
60 km/hr from B to A
To find :
• Average Speed
Solution:
let the distance covered from A to B = x
so, total distance
= A to B + B to A
= x + x
= 2x
• speed = Distace / Time
• Time = distance / speed
from A to B :
Time = x / 40
from B to A :
time = x/60
Total Time :
= x/40 + x/60
= 5x/120
average speed :
= Total distance/ total time
= 2x ÷ 5x/120
= 2x × 120/5x
= 240/5
= 48 km/hr
velocity is the directional speed of a object in motion as an indication of its rate of trade in function as determined from a selected body of reference and as measured by a specific fashionable of time (e.g. 60 km/h northbound).[1] speed is a essential concept in kinematics, the department of classical mechanics that describes the motion of our bodies.
pace is a physical vector quantity; each significance and path are needed to define it. The scalar absolute value (importance) of velocity is referred to as velocity, being a coherent derived unit whose amount is measured inside the SI (metric device) as metres consistent with 2nd (m/s or m⋅s−1). for instance, "five metres according to 2d" is a scalar, while "five metres in line with 2d east" is a vector. If there's a exchange in velocity, direction or both, then the object is said to be undergoing an acceleration.
a car travels along a straight line with speed 40 km per hour from a to b and returns back from B to a with speed 60 km per hour find the average speed of the car
https://brainly.in/question/3381577
Write the formula of average speed and average velocity
https://brainly.in/question/16696195
#SPJ3