Question

1. What is the frequency of wave with time period 0.025 s?
2. (a) Define momentum. Write its SI unit.
(b) How much momentum will an object of mass 10kg transfer to the floor if it falls from a height of 5 m? (g= 10m/s²)

Answer 1

Explanation:

1/time = frequency

1/0.025=frequency

hence,frequency =1000/25

=40 hertz

product of mass and velocity of an object is called momentum.

si unit of momentum is kg.m/s