An object travels 25 m in 4s on a linear path and then another 50 m in 6 s. The average speed of this object is .........`ms^(-1).`

Explanation

Total distance `=25 m + 50 m = 75 m `
Total time ` = 4s + 6 s = 10 s `
Average speed `= ("Total distance")/("Total time") = (75m)/(10s) = 7.5 ms ^(-1)`