Q38 of 139 Page 21

What is meant by the term ‘acceleration’? State the SI unit of acceleration.

Acceleration of a body is defined as the rate of change of its velocity with time. SI unit of acceleration is m/s2.

Acceleration = Rate of change of velocity/ time


More from this chapter

All 139 →
37

What is the difference between speed and velocity?

 37

Convert a speed of 90 km/h into m/s.

 38

Define the term ‘uniform acceleration’. Give one example of a uniformly accelerated motion.

 39

The distance between Delhi and Agra is 400 km. A train travels the first 200 km at a speed of 100 km/h. How fast must the train travel the next 200 km, so as to average 140 km/h for the whole journey?