Question

20 Define the following terms and write the SI units: (a). Displacement (b). Instar
velocity
21
Define limiting friction. What is the unit of coefficient of limiting friction?
.22
The angles which a vector î + ſ + v2k makes with x, y, and z axis respectively?
.23
State the work-energy theorem. Prove it for a constant force.
..24
The displacement-time graphs of two moving particles make angles of 300 and 45
axis. Find
ratio of their velocity.
Displacement
30
Time
OR
How do we calculate work done by a force? Write any two conditions under which work dor
is zero.​

Answer 1

Answer:

see the picture which i have attached