Question

A physical quantity measured is –10 ms-1. Is it speed, velocity or acceleration? Mention three ways in which this quantity can be altered.

Answer 1

Answer:

The Physical quantity is Velocity. It can be changed in the following 3 ways:

1. Application of Force

2. Change in Speed (that is magnitude of Velocity)

3. Change in direction of motion.

Explanation:

Answer 2

A physical quantity measured is -10 m/s. is it speed, velocity or acceleration ? Mention three ways in which this quantity can be altered.

solution : m/s is either unit of speed or velocity.

but we know, speed can't be negative. so -10m/s is definitely a physical quantity who shows velocity.

three ways in which this quantity can be altered.

1. by changing direction : velocity is a vector quantity, so it can't be altered just changing the direction.
2. by changing magnitude : it can be altered by changing magnitude of it.
3. by changing magnitude as well as direction : it can be altered by changing both magnitude as well as direction of it.