Question

2. During the first 18 min of a 60 min trip, a car has an average
speed of 11 ms. What should be the average speed for
remaining 42 min so that car is having an average speed of
21ms -l for the entire trip?
(a) 25.3 ms -1
(b) 29.2 ms -1
(C) 31 ms -1
(d) 35.6 ms -1​

Answer 1

Answer:

(A) 25.3m/s

Explanation:

This looks to me like a physics question based on the kinematic and mechanic aspect of physics

Like any problem in physics we can solve this in multiple ways

For simplicity I’m gonna assume only the kinematic aspect of physics in this problem

Instead of explaining this I’m gonna directly show u the mathematical representation of this question which I believe will be more helpful

D1 + D2 = D

11 x 18 x 60 + 42 x 60 x v = 60 x 60 x21

V = 25.3 m/s

So based on my knowledge of physics I’m gonna choose option (a) 23.3m/s

Please mark as brainliest and feel free to ask for any clarification.