A car travelling at 20 km/h speeds up to 6 km/h in 6 seconds. What is its acceleration ?

A car travelling at 36 km//h speeds upto 72 km//h in 5 seconds. What is its acceleration ? If the same car stops in 20 seconds , what is the acceleration?

A car increases its speed from 20 km//h to 50 km//h in 10 seconds. What is its acceleration?

A car increases its speed from 20 km/h to 50 km/hr in 10 seconds. Its acceleration is _________.

A bicycle increases its velocity from 10km/h to 15 km/h in 6 seconds.Calculate its acceleration.

(a) A car travels first 30 km at a uniform speed of 20 km//h and next 30 km at a uniform speed of 40 km//h . What is its average speed ? (b) A scooter acquires a speed of 36 km//h in 10 s . What is its acceleration?

A train travelling at the speed of x km/h crossed a 260 m long piatform in 30 seconds and overtook a man walking in the same direction at the speed of 6 km.h in 20 seconds. What is the value of x ?