Mechanics | Relativity Answers

two moving objects have the same momentum. object 1 has three times the mass of object 2 therefore object 1 has __the velocity of object 2
the same
one third
one ninth
three times

a particle of mass 20kg attached to a spring force constant 400N/m ,is oscillated along x-axis about the equilibrium position x=0 ,if the amplitude x=10cm what is the kinetic energy at x=0

a car accelerates frm rest at a constant rate 'A' for
some time after which it decelerate at a constant rate
'B' and comes to rest .if total tym elapsed is 't' then
maximum velocity acquired by car will be.?

does a moving object has impulse

It takes 1506 lb of force to pull a 5800 lb truck out of the snow. What is the coefficient of static friction?

a 40kg boy runs up a flight of stairs which is 5m high in 5s. his power output is?
A. 200W
B. 392W
C. 1000W
D. 1568W
E. 2000W

the total sum of work done for holding a 100kg object at a height of 2m above the floor for 20s is
A. 0
B. 100J
C. 200J
D. 2000J
E. 4000J

what is the difference in blood pressure between the top of the head and bottom of the feet of 1.6m tall person standing vertically (density of blood p = 1.05 x 10^3 kg/m^3)
A. 1.6 x 10^4 Pa
B. 1.6 x 10^5 Pa
C. 3.2 x 10^5 Pa
D. 1.6 x 10^6 Pa
E. 3.2 x 10^6 Pa

A person walks 23 m East and then walks
33 m at an angle 22◦ North of East.
What is the magnitude of the total dis-
placement?

For each of he following: Which object exers the reaction force, on which is the reaction exerted, the magnitude of the reaction force and its direction:
1. I put a downward force of 490N on a chair I am sitting on
2. I exert a backward force of 25N on the ground as I walk
3. Soccer player kicks a ball with 250N toward the south
4. Earth pulls the moon to its centre with a force of 2.0N