Question

Complete of following sentences a. The acceleration of the body that moves with a uniform velocity will be ________ b. A train travels from A to station B with a velocity of 100 km/h and returns from station B to station A with a velocity of 80km/h. Its average velocity during the whole journey in ______________ and its average speed is ____________

Answer 1

a) The acceleration of the body that moves with a uniform velocity will be zero since there is no change in either the speed or the direction of motion.

b) A train travels from A to station B with a velocity of 100 km/h and returns from station B to station A with a velocity of 80km/h. Its average velocity during the whole journey is zero (since the velocity is equal to displacement per unit time and the displace here is zero) and its average speed is 88.89 kmph (the average speed is given by the formula

2s1s2/s1+s2)

Answer 2

I hope this helps you...