Question

An object moves in a circle of radius 10 m with constant speed.It performs one rotation in a time interval of 2 seconds. Find
a.Displacement covered by the object.
b.Distance covered by the object
c.The average velocity of the object.
d.The average speed of the object
pls answer asap...

Answer 1

Explanation:

. A man wearing a bullet-proof vest stands

on roller skates. The total mass is 80 kg. A

bullet of mass 20 g is fired at 400 m/s. It is

stopped by the vest and falls to the ground.

What is then the velocity of the man?

(a) 1 m/s

(b) 0.1 m/s

(c) 0.01 m/s

(d) 0 m/s

14. The unit of measuring the momentum of a

moving body is:

(a) m/s

(b) kgm/s

(c) kgm/s? (d) Nm²/kg

15. The inertia of a moving object depends on:

i. Mass of the object

ii. Momentum of the object

iii. Speed of the object

iv. Shape of the object

Choose the correct option:

(a) (i) and (ii)

(b) only (i)

(c) only (ii)

(d) (iii) and (iv)

f force is